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
Astor Library teaching career and enter the family of Samuel Ward, a New York banker. Three of Ward's sons had been pupils at Round Hill School which Cogswell had administered. Ward introduced Cogswell to John Jacob Astor, who by then was in his 70s and had been retired for about 10 years. As the richest citizen of the United States, German-born Astor was considering what sort of testimonial he should leave to his adopted country. Early in January 1838, Astor consulted Cogswell about the use of some $300,000–$400,000, which he intended to leave for public purposes. Cogswell urged him to use it