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Gilbert D'Oyly, who accompanying his brothers to England, appears as a consenting party to Robert's foundation of St. George's Collegiate Church in 1074. He was, no doubt, father of
1. Roger D'Oyly, of Eston, in Oxfordshire, who became a military tenant of his cousins the Barons D'Oyly of Hocknorton, and was ancestor of the D'Oylys of Estcote and Pushull in Oxfordshire, afterwards of Greenland House, co. Bucks, and Chislehampton, co, Oxon, &c., who bore "Or, two bendlets azure," and were created Baronets in 1666; and of the Staffordshire, Suffolk, and Norfolk D'Oylys, who were created Baronets in 1663, and bore for arms stags' heads.