Sir William Betham, an English antiquary, born at Stradbroke, Suffolk, in 1779, died at Blackrock, near Dublin, Oct, 23, 1853. His father, the Rev. William Betham, was the author of "Genealogical Tables of the Sovereigns of the World" (folio, 1795) and of a "Baronetage" (5 vols. 4to, 1801-'5). The son was brought up as a printer, and his first literary employment was revising a portion of Gough's edition of Camden, In 1805 he became clerk and afterward deputy of Sir Charles Fortescue, and in 1820 succeeded him as Ulster king of arms. In 1812 he had been appointed genealogist of the order of St. Patrick and knighted. He was also deputy keeper of the records of Dublin. Among his works are: " Irish Antiquarian Researches " (2 parts, Dublin, 1826-7); " Dignities, Feudal and Parliamentary " (1830); "Origin and History of the Constitution of England" (1830); "The Gael and the Cymbri" (1834); and "Etruria Celtica: Etruscan Literature and Antiquities Investigated " (2 vols. 8vo, 1842).