diff --git a/README.md b/README.md
index ec2bec078f..60dd2152c9 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ List of Definitions
 * [AngularJS](http://angularjs.org) (by [Diego Vilar](https://github.com/diegovilar)) ([wiki](https://github.com/borisyankov/DefinitelyTyped/wiki/AngularJS-Definitions-Usage-Notes))
 * [async](https://github.com/caolan/async) (by [Boris Yankov](https://github.com/borisyankov))
 * [Backbone.js](http://backbonejs.org/) (by [Boris Yankov](https://github.com/borisyankov))
+* [Backbone Relational](http://backbonerelational.org/) (by [Eirik Hoem](https://github.com/eirikhm))
 * [Bootbox](https://github.com/makeusabrew/bootbox) (by [Vincent Bortone](https://github.com/vbortone/))
 * [Bootstrap](http://twitter.github.com/bootstrap/) (by [Boris Yankov](https://github.com/borisyankov))
 * [bootstrap-notify](https://github.com/Nijikokun/bootstrap-notify) (by [Blake Niemyjski](https://github.com/niemyjski))
diff --git a/backbone-relational/backbone-relational-test.ts b/backbone-relational/backbone-relational-test.ts
new file mode 100644
index 0000000000..f1eaffc020
--- /dev/null
+++ b/backbone-relational/backbone-relational-test.ts
@@ -0,0 +1,121 @@
+/// <reference path="../backbone/backbone.d.ts" />
+/// <reference path="backbone-relational.d.ts" />
+
+class House extends Backbone.RelationalModel {
+    // The 'relations' property, on the House's prototype. Initialized separately for each
+    // instance of House. Each relation must define (as a minimum) the 'type', 'key' and
+    // 'relatedModel'. Options include 'includeInJSON', 'createModels' and 'reverseRelation'.
+
+    relations = [
+        {
+            type: Backbone.HasMany, // Use the type, or the string 'HasOne' or 'HasMany'.
+            key: 'occupants',
+            relatedModel: 'Person',
+            includeInJSON: Backbone.Model.prototype.idAttribute,
+            collectionType: 'PersonCollection',
+            reverseRelation: {
+                key: 'livesIn'
+            }
+        }
+    ];
+
+}
+
+class Person extends Backbone.RelationalModel {
+    relations = [
+        { // Create a (recursive) one-to-one relationship
+            type: Backbone.HasOne,
+            key: 'user',
+            relatedModel: 'User',
+            reverseRelation: {
+                type: Backbone.HasOne,
+                key: 'person'
+            }
+        }
+    ];
+
+    initialize()
+    {
+        // do whatever you want :)
+    }
+}
+
+class PersonCollection extends Backbone.Collection {
+    url(models)
+    {
+        // Logic to create a url for the whole collection, or a set of models.
+        // See the tests, or Backbone-tastypie, for an example.
+        return '/person/' + ( models ? 'set/' + _.pluck(models, 'id').join(';') + '/' : '' );
+    }
+}
+
+class User extends Backbone.RelationalModel {
+
+}
+
+
+var paul = new Person({
+    id: 'person-1',
+    name: 'Paul',
+    user: { id: 'user-1', login: 'dude', email: 'me@gmail.com' }
+});
+
+// A User object is automatically created from the JSON; so 'login' returns 'dude'.
+paul.get('user').get('login');
+
+var ourHouse = new House({
+    id: 'house-1',
+    location: 'in the middle of the street',
+    occupants: ['person-1', 'person-2', 'person-5']
+});
+
+// 'ourHouse.occupants' is turned into a Backbone.Collection of Persons.
+// The first person in 'ourHouse.occupants' will point to 'paul'.
+ourHouse.get('occupants').at(0); // === paul
+
+// If a collection is created from a HasMany relation, it contains a reference
+// back to the originator of the relation
+ourHouse.get('occupants').livesIn; // === ourHouse
+
+// The `occupants` relation on 'House' has been defined as a HasMany, with a reverse relation
+// to `livesIn` on 'Person'. So, 'paul.livesIn' will automatically point back to 'ourHouse'.
+paul.get('livesIn'); // === ourHouse
+
+// You can control which relations get serialized to JSON, using the 'includeInJSON'
+// property on a Relation. Also, each object will only get serialized once to prevent loops.
+alert(JSON.stringify(paul.get('user').toJSON(), null, '\t'));
+// Load occupants 'person-2' and 'person-5', which don't exist yet, from the server
+ourHouse.fetchRelated('occupants');
+
+// Use the `add` and `remove` events to listen for additions/removals on a HasMany relation.
+// Here, we listen for changes to `ourHouse.occupants`.
+ourHouse
+    .on('add:occupants', function (model, coll)
+    {
+        console.log('add %o', model);
+        // Do something. Create a View?
+    })
+    .on('remove:occupants', function (model, coll)
+    {
+        console.log('remove %o', model);
+        // Do somehting. Destroy a View?
+    });
+
+// Use the 'update' event to listen for changes on a HasOne relation (like 'Person.livesIn').
+paul.on('change:livesIn', function (model, attr)
+{
+    console.log('change `livesIn` to %o', attr);
+});
+
+// Modifying either side of a bi-directional relation updates the other side automatically.
+// Take `paul` out or `ourHouse`; this triggers `remove:occupants` on `ourHouse`,
+// and `change:livesIn` on `paul`
+ourHouse.get('occupants').remove(paul);
+
+alert('paul.livesIn=' + paul.get('livesIn'));
+// Move into `theirHouse`; triggers 'add:occupants' on ourHouse, and 'change:livesIn' on paul
+
+var theirHouse = new House({ id: 'house-2' });
+paul.set({ 'livesIn': theirHouse });
+
+alert('theirHouse.occupants=' + theirHouse.get('occupants').pluck('name'));
\ No newline at end of file