Percy was born in Ashwell on 12 March 1891, fifth son of Benjamin James and Esther (nee Huffer) Bryant. He was a pupil at the Merchant Taylors School in Ashwell
Alfred was the eldest son of Alfred John and Hannah (nee Chamberlain) Burton, born on 21 January 1889 at Bassingbourn, Cambridgeshire. He was a pupil at the Merchant Taylors School in Ashwell, Hertfordshire.
Clement was the son of Herbert and Alice Caroline (nee Worboys) Pack, born at Ashwell, Hertfordshire on 10th February 1896. He was a pupil at the Merchant Taylor School in Ashwell.