I think I've just been given a copy of your family tree by my Mum's cousin Sheila (daughter of Edith Lock). I guess by your surname that you are descended from either Edith or Grace Lock? Maybe you can tell me if Charles Coleman and Jack Coleman are related.
My Mum's mother was Doris Austin, who was the daughter of Ellen Lock (b1886).
I'd be very interested to have any more information on the Locks or Spencers. Especially about where they lived once they came to Southampton: the 1881 census only gives Botany Bay as the address.