found: Her A twist of Lennon, 1978:t.p. (Cynthia Lennon)
found: Lennon, Cynthia. John, 2005:data from ECIP (b. 1939 in Blackpool; married John Lennon, 1962)
found: Wikipedia WWW site, Dec. 9, 2005(under Cynthia Powell: Cynthia Powell Lennon; b. Sept. 10, 1939, Blackpool; first wife of John Lennon)
found: New York times (online), viewed Apr. 2, 2015(in obituary published Apr. 1: Cynthia Lennon; b. Cynthia Powell, Sept. 10, 1939, Blackpool, Lancashire; m. John Lennon, 1962 (div. 1968); d. Wednesday [Apr. 1, 2015], Mallorca, aged 75)