Gondor is a fictional kingdom in the southern part of J. R. R. Tolkien's Middle-earth. It was a Dúnedain kingdom founded by Isildur and Anárion, the sons of Elendil, after the Downfall of Númenor. Its sister kingdom was Arnor in the north, which was founded by Elendil himself. Gondor was located to the west of Mordor, on the Bay of Belfalas. Its name means "Land of Stone", from Sindarin gond (stone) + (n)dor (land), most likely given to it because of the Ered Nimrais and other mountain chains in the land. A hypothetical Quenya equivalent was Ondonórë. Gondor and Arnor were known as the Realms of the Dúnedain in Exile.