J. R. R. Tolkien is one of many scholars who have studied and promoted the Mercian dialect of Old English, and introduced various Mercian terms into his legendarium - especially in relation to the Kingdom of Rohan, otherwise known as the Mark (a name cognate with Mercia). The Mercian dialect is the basis of Tolkien's language of Rohan, and a number of its kings are given the same names as monarchs who appear in the Mercian royal genealogy, e.g. Fréawine, Fréaláf and Éomer (see List of kings of the Angles).