Mary Tenney married her late sister Angeline's widower,
Samuel Northrup Castle, in 1842. She outlived three of her children: her son Albert died as a boy in 1864, and her son Charles died in 1874. Another son, Henry, died in 1895. She was widowed when Samuel died in 1894. Mary Tenney Castle died in 1907, at "Pu'uhonua", her home in the
Manoa Valley, aged 87 years. Some of her manuscript letters are reproduced online in the Hawaiian Mission Houses Digital Archives. The Castle Foundation Papers are in the Hawaiian Mission Houses Archives. The Mary Tenney Castle Memorial Graduate Fellowship at the
University of Hawaii at Manoa funds students interested in early childhood education. The Samuel and Mary Castle Art Center at
Punahou School is named for the Castles, as is a building at the
University of Hawaii. She was mother-in-law to psychologist
George Herbert Mead and businessman
William Drake Westervelt. Descendants of Mary Tenney Castle included her sons
William Richards Castle, a lawyer, and
James Bicknell Castle, a businessman; and grandsons
Harold Kainalu Long Castle and
William Richards Castle Jr. Family tree ==References==