William Rufus DeVane King was Buchanan’s little woman The Democrats, being the America hating scum that they are, allowed to be sworn in in Cuba while he was getting treatment for the illness that eventually killed him.
That’s been the rumor, especially since W. R. King and Buchanan lived together for 13 years. Andrew Jackson called them “Miss Nancy” and “Aunt Fancy”.
https://en.wikipedia.org/wiki/William_R._King
You’ve refreshed my memory of him. I went back and read his Wiki article, and it looks pretty clear that he and Buchanan were an item.