I have a copy of the marriage cert of Henry Delake to Annie Cottle 27th March 1873. Henry is recorded as a widower, a carpenter by trade and his father was John Delake (timber dealer by profession).
Annie Cottle's, daughter of Abraham and Mary Cottle.
Henry & Annie had 3 children - Mary Laura (b.1 June 1873), Abraham (b.1878) and Frederick G (b.1880).
Annie Cottle appears on 1861 census but no record of Henry or his father John in all previous censuses. Interestingly in 1891 census, there was a Polly De Lake living with the Cottles at 36/38 Beaufort Rise; she is recorded as a niece of Mary Cottle, the head of the family.
I have a record of Henry Delake being born in 1843 'at sea in American waters'.