Cyril Kenneth Bird was born in London on 17th December 1887. His father was company director Arthur Bird, b. 1847 and his mother was Mary Bird, b.1852, nee Wheen. Cyril had a sister, Mary, born in 1885 He was educated at Cheltenham College and King’s College London, where he studied art at evening classes at the Regent Street Polytechnic College.
Cyril married Mary Holden Caldwell (b. 24th June 1889) on 16th September 1914 in Paddington, London.