Gen`seric, king of the Vandals, son of Godigiselus, founder of the Vandal kingdom in Spain, and bastard brother of Gunderic, whom he succeeded in A.D. 429; from Spain he crossed to Africa, and in conjunction with the Moors added to his kingdom the land lying W. of Carthage, ultimately gaining possession of Carthage itself; he next set himself to organise a naval force, with which he systematically from year to year pillaged Spain, Italy, Greece, and the opposite lands of Asia Minor, sacking Rome in 455; until his death in 477 he continued master of the seas, despite strenuous efforts of the Roman emperors to crush his power.