Son of Sarah Ann (nee NEALE) HEWITT of Bricket Wood, Herts, and the late Charles HEWITT.
His parents married 23 January 1889 at All Saints, Leavesden, Herts. Charles died 1916 in Bricket Wood aged 52, and was buried 14 December at All Saints, Leavesden; Sarah died 1948 in the St Alban’s, Herts, district aged 82.
Percy was born 10 January 1899 in Bricket Wood, and baptised 3 February 1899 at All Saints, Leavesden. He attended Callowland Board School, Watford, from 5 April 1910 to 14 February 1913.
On the 1901 Census, aged 2 he lived in Bricket Wood, with his parents and four siblings. On the 1911 Census, at school aged 12, he still lived in Bricket Wood, with his parents and five siblings.