Ellis was born in
Surbiton,
Surrey, on 21 November 1890, the son of Henry Charles Ellis and May (née Bennett). He was educated at
Salisbury Cathedral School and at the Montpelier School at
Paignton in
Devon. The family lived at Home Cottage in Roundwell in
Bearsted. Ellis had one brother, Charles Harold. His great-grandfather, Charles Ellis, was the Mayor of
Maidstone in 1860, and his grandfather, Charles Jr., was also Mayor of Maidstone three times: in 1864, 1872 and 1878. ==First World War==