Katherine Rosa Man was born on 29 June 1883 at 22, Sydenham Road in Croydon, Surrey, the daughter Edward Garnet and Katherine (Matthews) Man.
She married Leland George Crosthwait on 3 November 1911 at St. Lukes, Chelsea, London.
Leland was born on 29 August 1881, at Bagenalstown, Co. Carlow, Ireland. His father was Samuel Crosthwait and mother Sarah Eliza.
Katherine and Leland belong to Generation Six; their children belong to Generation Seven and are:
Notes on Leland George: He was a Lieut. Col (Indian Army) and assisted in the Survey of India.