Percy was born in June 1891 at Sandon, Hertfordshire, the third son of Ellis and Annie (nee Kingsley) Anderson. Percy was a pupil at the Merchant Taylors School in Ashwell.
Reginald was the eldest son of Ellis and Annie (nee Kingsley) Anderson. Ellis was a bootmaker and beer retailer at the Australian Cow pub1 in High Street Ashwell. Reginald was a pupil of the Merchant Taylors School in Ashwell.
William was born at the Black Eagle pub in Baldock on 12 February 1898, the eldest son of Henry and Ellen Craft (nee Allison, previously Spicer) Anderson. He attended the Merchant Taylors School in Ashwell.