[3] "Mother Castle lived with a serenity and cheerfulness that made her home a Mecca to all visitors interested in the better side of Hawaiian life," recalled one obituary in 1907.
[4] In widowhood, she set up the Samuel N. Castle Memorial Trust, to fund educational scholarships, health programs, and building projects in Honolulu.
[6][7] Mary Tenney married her late sister Angeline's widower, Samuel Northrup Castle, in 1842.
Mary Tenney Castle died in 1907, at "Pu'uhonua", her home in the Manoa Valley, aged 87 years.
[11] The Mary Tenney Castle Memorial Graduate Fellowship at the University of Hawaii at Manoa funds students interested in early childhood education.