 He was also Consort Duke of Veragua and of la Vega and a Consort-Marquis of four further titles by his Spanish marriage in 1716.His full title was 2nd Duke of Berwick, 2nd Earl of Tinmouth, 2nd Baron Bosworth, 2nd Duke of Liria and Xerica, Grandee of Spain 1st class (from 1716), Knight of the Order of the Golden Fleece (from 29 September 1714), as well as the holder of several earldoms.His father was James FitzJames, 1st Duke of Berwick, an illegitimate son of King James II of England by Arabella Churchill, sister of the 1st Duke of Marlborough.