Percy was born in Ashwell on 4 February 1890, second son of Frederick and Mary Ann (nee Chalkley) Bryant. Percy was a pupil atthe Merchant Taylors School in Ashwell.
David was the fourth son of Samuel and Ruth (nee Hayden), born in Thriplow, Cambridgeshire on 29 November 1887. He was a pupil of the Merchant Taylors School in Ashwell.
Sonny was born on 30 October 1896 at Reed, Hertfordshire, the elder son of John and Mary Anne (nee Bysouth) Collins.