Hi Izabel, thanks for your help. My grandfather was William Blake Coote.
It seems that he was born William Blake between 1883/85 to Eliza Blake out of Wedlock. She went on to marry William Coote in Chelsea in Mar 1886.
I am not sure if William Coote was his father or hetook William blake on as his son when the marriage occured.
It was suggested that William Blake born in Sept 1885 in Chelsea was him but I got the birth certificate & the parents of that William Blake were Henry & Rachel Blake (nee Naunton).
I have found a William Blake born in Sept 1884 in Kensington & I think that is where his mother came from in Mar 1866 but only way to know for sure was the birth certificate. Have when he married & died but this seems most probable route, would you agree? Gill