[3] During his early football career, he worked as a carter on the Isle of Portland.
[2] Parker served as a colour sergeant with the Football Battalion of the Middlesex Regiment during the First World War.
[1] As captain of Clapton Orient, he was the first person to enlist in the newly formed battalion in December 1914.
[3] After his retirement from football, Parker worked as a porter at London King's Cross railway station and as a cleaner at government offices.
[2] This biographical article related to association football in England, about a forward born in the 1880s, is a stub.