Hello David, we were not told much family history, all I know is that Grampa's mother died giving birth to him, as I understand 'he wasn't legally adopted but brought up by his mothers parents as their own child.'
Grampa was summoned to London by his father at the age of 12, taken there by train by his mothers parents 'the James's of Caerau' met his father in a hotel where his inheritance was settled on him in trust to his grandparents until he was aged 21, then his father who was of the then English aristocracy, left England to set up a new life in America.
Some of Grampa's trust money had been spent by the time he reached the age of 21 but he did have enough to visit London again, pay to record a singing record, have a portrait of himself painted in oils, return to Wales, join a cricket club, buy his whites, join a bowls club and buy his bowls, he was also the first baby to be born in the first house to be built in Caerau but I do not know it's name, it may have been called 'ivy house' as I heard that name being spoken of quite a lot. According to my own DNA I have many cousins in New York and Williamston in the US which I have not wanted to follow up but I assume they stem from Grampa's father.
I hope this is of interest but I suppose it does not give any fresh leads for you.
God Bless. xx Margaret 'not the one now residing in the place we call heaven.'
Ahh I have a thought, he may have been registered as just 'Edwin James, as the child of his grandparents, he called their children 'his siblings.'
Oh your Auntie Edwina passed in '1993' and your Auntie Katie(Mary Catherine) passed in '1975'