¹⁰Much of the early information about Brian Boru is from a 12th-century text which may have been written by his great-grandson in an effort to legitimize the claim of his descendants on the High Kingship, and thus must be regarded with skepticism: Cogadh Gaedhil re Gallaibh ("The War of the Irish with the Foreigners"). This text may be read here in an 1867 English translation by James Henthorn Todd.