Hello,
I can provide you with considerable insight into this.
I am a descendant of James Wallis who died in 1800 in Cork, Ireland. His wife, and mother of his two sons George and James, was Lucinda Hewson who is known to have been related to a very noble family (the knight of Kerry!).
I couldn't believe my eyes when I read your post online and would very much like to chat to you. Please message me on here.
J.