I'm sorry I can't give you the names of the two war dead Mazzies off the top of my head.Their names are on a war memorial in the centre of Bristol (on the St Mary on the Quay church) and the next time I'm passing it I'll have a look and check out the names.As far as I can remember the full names aren't there, just initials and surname.
There is a story in our family, told by my grandmother to one of my cousins (Steve Lewis, who I believe you have been in touch with) that a Mazzie went down on the Titanic.I've checked a Titanic website that lists all who were on board, but there isn't a Mazzie there.However, it seems to me that Mazzies were travelling a lot around that time(illegal immigrants?) and there is a surname on the list that closely resembles Mazzie.Do you know anything about this?
Good luck with your family history search. Keren PS My father was John William Mazzie and he had one brother named Edward.He also had sisters Peggy, Sylvia and Patricia.