Hi Slowhands,
Thanks for all this.
Some of it I have as I have access to Ancestry.

I think it'll be easier if I print it all off and work through it chronologically AGAIN.

At one point, I wondered whether George Jenkins / Halford was perhaps born illegitimately as Jenkins, then his mother married later to a Halford and he and other family took on his mothers married name. No proof of this though. I was just trying to think outside the box for possible scenarios that would cause the change of name.

I appreciate your efforts meantime and will have a detailed look over the weekend.

Dave