Source: Michael Doyle Their Name Liveth For Evermore: The Great War Roll of Honour for Leicestershire and Rutland.
He was the son of John Edward Cockayne a tailor, born 1871 in Leicester and his wife Martha, born 1871 in Leicester. Percy was born in 1897 in Leicester, in March 1901 the family home was at 54, Andrews Street, Leicester. In April 1911 Percy was employed as a printer’s boy and was residing in the family home at 54, Andrews Street, Leicester, together with his parents and brother Stanley, born 1902 in Leicester.