I found a member on Genesreunited that has a Bennett recorded in their tree. Following a little correspondence, we've established the following:
Bennet bn 1897 as the son of Allan Hearty Martin and Mary Louisa Frogbrook who married Mar quarter 1896, Westbourne district.I have an Allan H Martin married to unknown spouse with a son, Allan Martin.
I have a sister Sybil Fern bn 1899.John Martin is also present in my tree with a spouse, Emma.
I believe Allan Hearty to be the son of John Martin bn C1837 Bosham and Emma.
Mary Louisa is with her 2 children in 1901 at Mariner's Terrace Bosham.
I think Allan must be the Allen Martin on the ship Hilda in Newhaven Harbour in 1901 as married Master.
I found him in 1891 as a mariner son.
I have searched the register indexes from 1864 to 1868 and it appears Allan Hearty was not registered at birth.
Awaiting visibility of the tree....