Just a few notes to update. Our puppy Mardigan didn't make it after being poisoned by thieves -- details and picture at my personal blog.
Last Thursday I spent a few hours at the Family History Centre in Johannesburg, looking at the marriage registers for St John the Baptist Church, Bedminster, from 1900-1944. The church was bombed during the second world war, so that is perhaps as far as the records go. I found some Hayes and Purnell marriages, some of them related, though most that were related we already knew of from other sources.
I recorded these in the Inmagic database program, and the last couple of days I've been preparing to transfer other marriage records I've recorded over the years from the askSam program to Inmagic, so we can have an index of them all in one place.