His granddaughter , Cornelia Van Rensselaer Thayer ( 1849 -- 1903 ) married J. Hampden Robb ( 1846 -- 1911 ) , a New York State Senator , in 1868 .
His grandson was John Eliot Thayer ( 1862 -- 1933 ) , an amateur ornithologist .
grandson 's granddaughter , Cornelia Van Rensselaer Thayer ( 1849 -- 1903 ) married J. Hampden Robb ( 1846 -- 1911 ) , a New York State Senator , in 1868 .
His grandson was John Eliot Thayer ( 1862 -- 1933 ) , an amateur ornithologist .