Harold Christopher was the 3rd son of Herbert and Annie Maria (nee Reynolds) Clements born in Ashwell, Hertfordshire on 25 December 1895. He was a pupil at the Merchant Taylors School in Ashwell.
Eric was the fourth son of Thomas Silver Hyder and Clarissa (nee Bonfield) Hyder, born Hill on 28 May 1898 at Flint House, Lime Kiln Hill, Ashwell, Hertfordshire. He was a pupil at the Merchant Taylors School in Ashwell.
Percy was the 4th son of John and Martha (nee Scoot) Sheldrick, born in Ashwell, Hertfordshire on 28 September 1890. He was a pupil at the Merchant Taylors School in Ashwell.