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
Caroline Schermerhorn Astor "the Mrs. Astor." With the death of John Jacob Astor III in 1890, William Waldorf Astor had inherited his father's share of the Astor holdings and, titularly, became the head of the Astor family. In his mind, this made Mamie ""The" Mrs. Astor." However, Mamie was eighteen years younger than Lina and lacked Lina's social power. His further attempts at challenging Lina's preeminence in New York society, however, were thwarted, and he soon moved with his family to England, where he later became a viscount. In retaliation for his aunt's intransigence, William Waldorf Astor had his father's house torn down