Hello Galway Girl.
This might be a long shot and I may well have it completely wrong, but having read your posts, there's quite a lot of coincidences with my family history.
The background to this is as follows. My Mum was born in 1952 in Preston. My family have lived there for years and are of Irish R.C. heritage. My Gran was young when she had my Mum and was not married. My Mum only new certain details about the past and didn't have the correct surname to search for more details, as there's no fathers name on my Mums birth certificate. It was only a couple of years ago that my Gran told her the following.
My Mums father was an Irish man called John/Jimmy Casey, he was older than my Gran and they lived together for approx 3 years when my Mum was born. It was believed that he had another family in London and another in Preston. Does any of this sound familiar ? I was hoping you may of heard of some of this before. Apologies if I've got this wrong, but we have searched before trying to find answers about the past and it would be great to finally get some information.