Hello,
I was passing by and was given a link to your posting. I don't know if you may have any details within your family search, but I am trying to trace some details on the Drummond family. I have researched the Williams-Drummond family and know who they are, but this is my position.
My ancestors are from Caio, well Cwrt y Cadno to be more precise. Anyway, in 1874 my great grandmother, Elizabeth Davies was born to mother Mary Davies, no father. Like most in those days, living in two up two down or worse and labourers. However, after her marriage, Elizabeth came into a lot of money. I have been told that the father was Sir James Drummond or one of the brothers. I spent some time researching in 2007 and a local lady confirmed that she knew Elizabeth and remembers her coming into money, which in those days, as she said "was thousands of pounds, not hundreds". She managed to farm at a place called Garth and going through the family research, I'm not sure this would've been possible without some money. I am also advised by a living cousin that her parents had to seek the permission of the Drummonds in Marble Arch for their marriage, if there is not connection, why did they have to? Anyway, I haven't managed to get any will or paper work but wondered if there was any family gossip or help you could enlighten me with seeing as you are researching your family, Williams-Drummond. Thank you