DeLancey Astor Kane the mother of Peter Augustus Jay), and Sybil Kent Kane. He was the grandson of Walter Langdon and Dorothea (née Astor) Langdon and the great-grandson of John Jacob Astor. He was a cousin of Lt. Col. John Jacob Astor IV. His paternal lineage descended from John O'Kane who emigrated to the country in 1752 from County Londonderry and Antrim, Ireland. During the American Revolutionary War, O'Kane (who dropped the "'O" once in America) was living at Sharyvogne, his estate in Dutchess County, which was confiscated after the War due to his Loyalist times. His eldest son, John Jr., stayed and
William Backhouse Astor Jr. of real estate businessman William Backhouse Astor Sr. (1792–1875) and Margaret Rebecca (née Armstrong) Astor (1800–1872). His siblings included elder brother John Jacob Astor III, who married Charlotte Augusta Gibbes; Emily Astor, who married Samuel Cutler Ward; Laura Eugenia Astor, who married Franklin Hughes Delano; Mary Alida Astor, who married John Carey; Henry Astor, who married Malvina Dinehart; and Sarah Astor, who died in infancy. Astor's paternal grandparents were fur-trader John Jacob Astor and Sarah Cox (née Todd) Astor. His uncle, William Sr.'s elder brother, was occasional poet John Jacob Astor Jr., who never married or had children. His maternal