I hope you will not mind a small piece of irrelevance. I was brought up in North Canterbury, New Zealand, and in a very small town near where I lived, there lived a Mrs Bullock. Sadly I have no information about her origins, or whether she is connected to your search.

However, one of her boarders was the pool custodian where I lived, and his name was Mr Heifer. You cannot make up some of this stuff, and I have not...