diff --git a/packages/jsonld-dataset-proxy/src/ContextUtil.ts b/packages/jsonld-dataset-proxy/src/ContextUtil.ts
index 5b2164c..075b546 100644
--- a/packages/jsonld-dataset-proxy/src/ContextUtil.ts
+++ b/packages/jsonld-dataset-proxy/src/ContextUtil.ts
@@ -3,6 +3,7 @@ import type {
   LdoJsonldContext,
   LdoJsonldContextExpandedTermDefinition,
 } from "./LdoJsonldContext";
+import type { NamedNode } from "@rdfjs/types";
 
 // Create JSONLD Shorthands
 const shorthandToIriMap: Record<string, string> = {
@@ -64,15 +65,18 @@ export class ContextUtil {
    */
   private getRelevantContext(
     key: string,
-    typeName?: string,
+    typeNames?: NamedNode[],
   ): ContextDefinition | LdoJsonldContext {
-    if (
-      typeName &&
-      typeof this.context[typeName] === "object" &&
-      this.context[typeName]?.["@context"] &&
-      this.context[typeName]?.["@context"][key]
-    ) {
-      return this.context[typeName]?.["@context"];
+    if (!typeNames) return this.context;
+    for (const typeNameNode of typeNames) {
+      const typeName = this.iriToKey((typeNameNode as NamedNode).value, []);
+      if (
+        typeof this.context[typeName] === "object" &&
+        this.context[typeName]?.["@context"] &&
+        this.context[typeName]?.["@context"][key]
+      ) {
+        return this.context[typeName]?.["@context"];
+      }
     }
     return this.context;
   }
@@ -91,7 +95,7 @@ export class ContextUtil {
   /**
    * Converts a given JsonLd key into an RDF IRI
    */
-  public keyToIri(key: string, typeName: string): string {
+  public keyToIri(key: string, typeName: NamedNode[]): string {
     const relevantContext = this.getRelevantContext(key, typeName);
     if (!relevantContext[key]) {
       return key;
@@ -108,9 +112,12 @@ export class ContextUtil {
   /**
    * Converts a given RDF IRI into the JsonLd key
    */
-  public iriToKey(iri: string, typeName: string): string {
-    const relevantMap =
-      this.typeNameToIriToKeyMap[typeName] || this.iriToKeyMap;
+  public iriToKey(iri: string, typeNames: NamedNode[]): string {
+    let relevantMap = this.iriToKeyMap;
+    for (const typeNameNode of typeNames) {
+      const typeName = this.iriToKey((typeNameNode as NamedNode).value, []);
+      relevantMap = this.typeNameToIriToKeyMap[typeName] || this.iriToKeyMap;
+    }
     if (relevantMap[iri]) {
       return relevantMap[iri];
     }
@@ -120,7 +127,7 @@ export class ContextUtil {
   /**
    * Returns the IRI of a datatype of a specific object
    */
-  public getDataType(key: string, typeName: string): string {
+  public getDataType(key: string, typeName: NamedNode[]): string {
     const relevantContext = this.getRelevantContext(key, typeName);
     if (
       typeof relevantContext[key] === "object" &&
@@ -136,7 +143,7 @@ export class ContextUtil {
   /**
    * Returns true if the object is a collection
    */
-  public isArray(key: string, typeName: string): boolean {
+  public isArray(key: string, typeName: NamedNode[]): boolean {
     const relevantContext = this.getRelevantContext(key, typeName);
     return !!(
       relevantContext[key] &&
@@ -153,7 +160,7 @@ export class ContextUtil {
   /**
    * Returns true if the object is a language string
    */
-  public isLangString(key: string, typeName: string): boolean {
+  public isLangString(key: string, typeName: NamedNode[]): boolean {
     const relevantContext = this.getRelevantContext(key, typeName);
     return !!(
       relevantContext[key] &&
diff --git a/packages/jsonld-dataset-proxy/src/ProxyContext.ts b/packages/jsonld-dataset-proxy/src/ProxyContext.ts
index ab89bcb..6220c5d 100644
--- a/packages/jsonld-dataset-proxy/src/ProxyContext.ts
+++ b/packages/jsonld-dataset-proxy/src/ProxyContext.ts
@@ -1,4 +1,4 @@
-import type { GraphNode, QuadMatch } from "@ldo/rdf-utils";
+import type { GraphNode, QuadMatch, SubjectNode } from "@ldo/rdf-utils";
 import type { BlankNode, Dataset, NamedNode } from "@rdfjs/types";
 import type { ArrayProxyTarget } from "./arrayProxy/createArrayHandler";
 import { createArrayHandler } from "./arrayProxy/createArrayHandler";
@@ -8,6 +8,7 @@ import type { ArrayProxy } from "./arrayProxy/ArrayProxy";
 import { _getUnderlyingArrayTarget } from "./types";
 import type { ContextUtil } from "./ContextUtil";
 import type { LanguageOrdering } from "./language/languageTypes";
+import { namedNode } from "@rdfjs/data-model";
 
 export interface ProxyContextOptions {
   dataset: Dataset;
@@ -18,6 +19,8 @@ export interface ProxyContextOptions {
   state?: Record<string, unknown>;
 }
 
+const rdfType = namedNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#type");
+
 /**
  * This file keeps track of the target objects used in the proxies.
  * The reason is so that JSON.stringify does not recurse inifinitely
@@ -107,4 +110,12 @@ export class ProxyContext {
     };
     return new ProxyContext(fullOptions);
   }
+
+  public getRdfType(subjectNode: SubjectNode): NamedNode[] {
+    return this.dataset
+      .match(subjectNode, rdfType)
+      .toArray()
+      .map((quad) => quad.object)
+      .filter((object): object is NamedNode => object.termType === "NamedNode");
+  }
 }
diff --git a/packages/jsonld-dataset-proxy/src/arrayProxy/modifyArray.ts b/packages/jsonld-dataset-proxy/src/arrayProxy/modifyArray.ts
index b1ae921..f58758d 100644
--- a/packages/jsonld-dataset-proxy/src/arrayProxy/modifyArray.ts
+++ b/packages/jsonld-dataset-proxy/src/arrayProxy/modifyArray.ts
@@ -114,7 +114,10 @@ export function modifyArray<ReturnType>(
     addObjectToDataset(
       {
         "@id": target[0][0],
-        [contextUtil.iriToKey(target[0][1].value)]: added,
+        [contextUtil.iriToKey(
+          target[0][1].value,
+          proxyContext.getRdfType(target[0][0]),
+        )]: added,
       } as RawObject,
       false,
       proxyContext,
@@ -123,7 +126,12 @@ export function modifyArray<ReturnType>(
   const addedNodes = added
     ? (added
         .map((addedValue) => {
-          return getNodeFromRawValue(key, addedValue, proxyContext);
+          return getNodeFromRawValue(
+            key,
+            addedValue,
+            target[0][0] ? proxyContext.getRdfType(target[0][0]) : [],
+            proxyContext,
+          );
         })
         .filter((val) => val != undefined) as ObjectNode[])
     : [];
diff --git a/packages/jsonld-dataset-proxy/src/graphOf.ts b/packages/jsonld-dataset-proxy/src/graphOf.ts
index 982c09f..db50e68 100644
--- a/packages/jsonld-dataset-proxy/src/graphOf.ts
+++ b/packages/jsonld-dataset-proxy/src/graphOf.ts
@@ -31,7 +31,10 @@ export function graphOf<Subject extends ObjectLike, Key extends keyof Subject>(
   const proxyContext = subjectProxy[_proxyContext];
   const subjectNode = subjectProxy[_getUnderlyingNode];
   const predicateNode = namedNode(
-    proxyContext.contextUtil.keyToIri(predicate as string),
+    proxyContext.contextUtil.keyToIri(
+      predicate as string,
+      proxyContext.getRdfType(subjectNode),
+    ),
   );
   let objectNode: ObjectNode | null;
   if (object == null) {
diff --git a/packages/jsonld-dataset-proxy/src/language/languagesOf.ts b/packages/jsonld-dataset-proxy/src/language/languagesOf.ts
index 0a111b2..44c0174 100644
--- a/packages/jsonld-dataset-proxy/src/language/languagesOf.ts
+++ b/packages/jsonld-dataset-proxy/src/language/languagesOf.ts
@@ -51,11 +51,14 @@ export function languagesOf<
   const proxy = getSubjectProxyFromObject(subjectObject);
   const proxyContext = proxy[_proxyContext];
   const subject = proxy[_getUnderlyingNode];
-  const predicate = namedNode(proxyContext.contextUtil.keyToIri(key as string));
+  const rdfTypes = proxyContext.getRdfType(subject);
+  const predicate = namedNode(
+    proxyContext.contextUtil.keyToIri(key as string, rdfTypes),
+  );
   return createLanguageMapProxy<LanguageMap>(
     subject,
     predicate,
     proxyContext,
-    proxyContext.contextUtil.isArray(key as string),
+    proxyContext.contextUtil.isArray(key as string, rdfTypes),
   ) as LanguageOfConditionalReturn<SubjectObject, Key>;
 }
diff --git a/packages/jsonld-dataset-proxy/src/subjectProxy/createSubjectHandler.ts b/packages/jsonld-dataset-proxy/src/subjectProxy/createSubjectHandler.ts
index 02b2cb4..15a41c7 100644
--- a/packages/jsonld-dataset-proxy/src/subjectProxy/createSubjectHandler.ts
+++ b/packages/jsonld-dataset-proxy/src/subjectProxy/createSubjectHandler.ts
@@ -48,7 +48,12 @@ export function createSubjectHandler(
       const tripleDataset = proxyContext.dataset.match(subject);
       const keys: Set<string> = new Set(["@id"]);
       tripleDataset.toArray().forEach((quad) => {
-        keys.add(proxyContext.contextUtil.iriToKey(quad.predicate.value));
+        keys.add(
+          proxyContext.contextUtil.iriToKey(
+            quad.predicate.value,
+            proxyContext.getRdfType(subject),
+          ),
+        );
       });
       return Array.from(keys);
     },
diff --git a/packages/jsonld-dataset-proxy/src/subjectProxy/deleteFromDataset.ts b/packages/jsonld-dataset-proxy/src/subjectProxy/deleteFromDataset.ts
index 604b29e..fabe85e 100644
--- a/packages/jsonld-dataset-proxy/src/subjectProxy/deleteFromDataset.ts
+++ b/packages/jsonld-dataset-proxy/src/subjectProxy/deleteFromDataset.ts
@@ -19,7 +19,9 @@ export function deleteValueFromDataset(
     return true;
   }
   const subject = target["@id"];
-  const predicate = namedNode(proxyContext.contextUtil.keyToIri(key));
+  const predicate = namedNode(
+    proxyContext.contextUtil.keyToIri(key, proxyContext.getRdfType(subject)),
+  );
   if (key === "@id") {
     nodesToRemove.push(target["@id"]);
   } else {
diff --git a/packages/jsonld-dataset-proxy/src/subjectProxy/getValueForKey.ts b/packages/jsonld-dataset-proxy/src/subjectProxy/getValueForKey.ts
index 37f5141..a22b9ec 100644
--- a/packages/jsonld-dataset-proxy/src/subjectProxy/getValueForKey.ts
+++ b/packages/jsonld-dataset-proxy/src/subjectProxy/getValueForKey.ts
@@ -19,7 +19,9 @@ export function getValueForKey(
     if (target["@id"].termType === "BlankNode") {
       return undefined;
     }
-    return contextUtil.iriToKey(target["@id"].value);
+    // Purposly don't provide a typeName because we don't want to use the nested
+    // context
+    return contextUtil.iriToKey(target["@id"].value, []);
   }
   if (key === "toString" || key === Symbol.toStringTag) {
     // TODO: this toString method right now returns [object Object],
@@ -31,18 +33,19 @@ export function getValueForKey(
     return;
   }
   const subject = target["@id"];
-  const predicate = namedNode(contextUtil.keyToIri(key));
-  if (contextUtil.isArray(key)) {
+  const rdfType = proxyContext.getRdfType(subject);
+  const predicate = namedNode(contextUtil.keyToIri(key, rdfType));
+  if (contextUtil.isArray(key, rdfType)) {
     const arrayProxy = proxyContext.createArrayProxy(
       [subject, predicate, null, null],
       false,
       undefined,
-      contextUtil.isLangString(key),
+      contextUtil.isLangString(key, rdfType),
     );
     return arrayProxy;
   }
   let objectDataset = dataset.match(subject, predicate);
-  if (contextUtil.isLangString(key)) {
+  if (contextUtil.isLangString(key, rdfType)) {
     objectDataset = filterQuadsByLanguageOrdering(
       objectDataset,
       proxyContext.languageOrdering,
diff --git a/packages/jsonld-dataset-proxy/src/util/addObjectToDataset.ts b/packages/jsonld-dataset-proxy/src/util/addObjectToDataset.ts
index a24e437..a0f2a97 100644
--- a/packages/jsonld-dataset-proxy/src/util/addObjectToDataset.ts
+++ b/packages/jsonld-dataset-proxy/src/util/addObjectToDataset.ts
@@ -22,15 +22,16 @@ export function addRawValueToDatasetRecursive(
   proxyContext: ProxyContext,
 ): void {
   const { dataset, contextUtil } = proxyContext;
-  const predicate = namedNode(contextUtil.keyToIri(key));
+  const rdfType = proxyContext.getRdfType(subject);
+  const predicate = namedNode(contextUtil.keyToIri(key, rdfType));
   // Get the Object Node
-  const object = getNodeFromRawValue(key, value, proxyContext);
+  const object = getNodeFromRawValue(key, value, rdfType, proxyContext);
   if (object == undefined) {
     dataset.deleteMatches(subject, predicate);
   } else if (object.termType === "Literal") {
     let languageAppliedObject = object;
     // Handle language use case
-    if (contextUtil.isLangString(key)) {
+    if (contextUtil.isLangString(key, rdfType)) {
       const languageKey = getLanguageKeyForWriteOperation(
         proxyContext.languageOrdering,
       );
@@ -81,6 +82,7 @@ export function addRawObjectToDatasetRecursive(
   }
   const { dataset } = proxyContext;
   const subject = getNodeFromRawObject(item, proxyContext.contextUtil);
+  const rdfType = proxyContext.getRdfType(subject);
   if (visitedObjects.has(subject)) {
     return proxyContext.createSubjectProxy(subject);
   }
@@ -89,9 +91,11 @@ export function addRawObjectToDatasetRecursive(
     if (key === "@id") {
       return;
     }
-    const predicate = namedNode(proxyContext.contextUtil.keyToIri(key));
+    const predicate = namedNode(
+      proxyContext.contextUtil.keyToIri(key, rdfType),
+    );
     if (shouldDeleteOldTriples) {
-      if (proxyContext.contextUtil.isLangString(key)) {
+      if (proxyContext.contextUtil.isLangString(key, rdfType)) {
         const languageKey = getLanguageKeyForWriteOperation(
           proxyContext.languageOrdering,
         );
diff --git a/packages/jsonld-dataset-proxy/src/util/getNodeFromRaw.ts b/packages/jsonld-dataset-proxy/src/util/getNodeFromRaw.ts
index 4ea9a73..f66cd90 100644
--- a/packages/jsonld-dataset-proxy/src/util/getNodeFromRaw.ts
+++ b/packages/jsonld-dataset-proxy/src/util/getNodeFromRaw.ts
@@ -14,7 +14,9 @@ export function getNodeFromRawObject(
   } else if (!item["@id"]) {
     return blankNode();
   } else if (typeof item["@id"] === "string") {
-    return namedNode(contextUtil.keyToIri(item["@id"]));
+    // Purposly do not include typeName because we don't want to reference
+    // nested context
+    return namedNode(contextUtil.keyToIri(item["@id"], []));
   } else {
     return item["@id"];
   }
@@ -23,6 +25,7 @@ export function getNodeFromRawObject(
 export function getNodeFromRawValue(
   key: string,
   value: RawValue,
+  rdfTypes: NamedNode[],
   proxyContext: ProxyContext,
 ): BlankNode | NamedNode | Literal | undefined {
   // Get the Object Node
@@ -33,7 +36,8 @@ export function getNodeFromRawValue(
     typeof value === "boolean" ||
     typeof value === "number"
   ) {
-    const datatype = proxyContext.contextUtil.getType(key);
+    // PICKUP: figure out how to handle looking for the RDF Types of a raw value
+    const datatype = proxyContext.contextUtil.getDataType(key, rdfTypes);
     if (datatype === "@id") {
       return namedNode(value.toString());
     } else {
diff --git a/packages/jsonld-dataset-proxy/test/ContextUtil.test.ts b/packages/jsonld-dataset-proxy/test/ContextUtil.test.ts
index eafff63..18f8005 100644
--- a/packages/jsonld-dataset-proxy/test/ContextUtil.test.ts
+++ b/packages/jsonld-dataset-proxy/test/ContextUtil.test.ts
@@ -7,13 +7,13 @@ describe("ContextUtil", () => {
         name: "http://hl7.org/fhir/name",
       };
       const contextUtil = new ContextUtil(fakeContext);
-      expect(contextUtil.keyToIri("name")).toBe("http://hl7.org/fhir/name");
+      expect(contextUtil.keyToIri("name", [])).toBe("http://hl7.org/fhir/name");
     });
 
     it("returns the given key if it is not in the context", () => {
       const contextUtil = new ContextUtil({});
-      expect(contextUtil.keyToIri("name")).toBe("name");
-      expect(contextUtil.iriToKey("http://hl7.org/fhir/name")).toBe(
+      expect(contextUtil.keyToIri("name", [])).toBe("name");
+      expect(contextUtil.iriToKey("http://hl7.org/fhir/name", [])).toBe(
         "http://hl7.org/fhir/name",
       );
     });
@@ -22,7 +22,7 @@ describe("ContextUtil", () => {
       const contextUtil = new ContextUtil({
         name: { "@type": "http://www.w3.org/2001/XMLSchema#string" },
       });
-      expect(contextUtil.keyToIri("name")).toBe("name");
+      expect(contextUtil.keyToIri("name", [])).toBe("name");
     });
   });
 
@@ -31,7 +31,7 @@ describe("ContextUtil", () => {
       const contextUtil = new ContextUtil({
         name: { "@id": "http://hl7.org/fhir/name" },
       });
-      expect(contextUtil.getType("name")).toBe(
+      expect(contextUtil.getDataType("name", [])).toBe(
         "http://www.w3.org/2001/XMLSchema#string",
       );
     });