Slow to reply - apologies have been away.
One other bit of jigsaw following the Greenwich thread - possibly - I now have a death cert for Catherine Powers 29/8/1891, age 47 (so birth abt. 1844) Hawker of 22 Mill Lane Deptford, Greenwich District. Unfortunately informant was Medical Officer Union Infirmary and not a family member, so no clue there.
This possibly fits with Jeremiah O'Connell birth in 1878, in Union Infirmary Greenwich with mother formerly Power and a hawker.
So there is a possibility that Catherine Power didn't marry the father Jeremiah O'C but used his name while they were together.
She was with Jeremiah and family as Catherine O'Connell in the 1891 census (i.e. just before her death). He is on his own in 1894 thro 1902 on the electoral roll in Campbell Rd Islington, a wdr on the 1901 census and died in Islington Infirmary in 1910.
So far so good but problem comes with birth of Catherine in 1883. Although she was born in Greenwich, address Mill Lane Deptford (which fits) - the mothers name was given as Connelly and the father Jeremiah O'C was given as deceased.
I can't see an explanation for that unless she was trying to hide her identity!
That's annoying because I was following the idea that if she could use her partners name without marrying once (with jeremiah O'C) - I suppose she could have done it previously with the father of Thomas and Mary which is why I can't find them under Power.
Any thoughts would be appreciated
Ian