WW-- Fitzroy-- comes to mind..
and yes whitman, Fitz has become an associated with irish names.. the pretty young thing entertains the king.. an then get pregnant.. bad form to have unwed mothers about -- retire them to the country.. or better yet, out of the country.. some nice rural estate in ireland.. the son (or daughter) raised far from court has less of chance of attemping to set himself up as a contender to the throne. ireland was far away.. and a good place if you where a king, to banish a former mistress to!