Neil,
You'll have to bear with me as I've got loads of info but most of it's on paper. I'll try to get around to sorting it out properly as soon as I can.
Just had a word with my father and he can remember an Oliver and he thinks he used to be a policeman or dock policeman. Does that ring a bell?
If it's the right Oliver, he was my grandmother's brother. Her name was Violet Haagensen b. 1916. Peter and Maude Florence had about 8 or so children in all.