“ But, do you know the background for the use of the “Fits/Fitz” in FitzPatrick, FitzGerald, et. al.? “
No, and it’s been giving me Fitz!
“Fitz” ...Oh, yeah...a Fitz-Bath. Isn’t that how to make your hemorrhoids better???
Fits is the old-world indicator of “bastard child” or “bastard son”
So, the \first\ FitzPatricks were the bastard son’s of Patrick.