Possibly because of the trips to Wales as a child, I picked up on various family stories.
1 The main one is our link with Sir John Prichard Jones, the philanphropist founder of Dickens and Jones store in Regent Street, London. More here.
2 As our car crossed the Menai bridge, my aunt would always point out the statue of a man on a column, and say that he was a relative. The statue is of Henry William Paget, who was second in command to Wellington at Waterloo. There is probably no way we can substantiate a link: Paget was known to have had more than 13 children, and his current descendants have no descendant family tree.
3 The third Anglesey tale to have passed down the family was that a relative died at the opening ceremony of one of the Menai bridges. He drowned after being knocked over the parapet by a dog. I have been unable to find any reference to this on the web. More research will be needed to pin this down.