Sidney was born at Forest Gate, Essex, the eldest son of Albert and Emily (nee Johnson) of Ashwell, born on 10 May 1893. He was a pupil at the Merchant Taylors School in Ashwell.
Harry was the second son of Arthur and Eva Eliza Ann (nee Smith) Covington born in January 1890 at Ashwell, Hertfordshire. He was a pupil of the Merchant Taylors School in Ashwell.
Thomas was born on 19th October 1892 at Caldecote, fifth son of James and Emily (nee Hull) at Caldecote, Hertfordshire. He was a pupil of the Merchant Taylors School.