It has often been pointed that King David is the descendant of a convert, Ruth, often called the first convert. And the most common tradition for the messiah is that he will be Mashiach ben David, a descendant of David.
There’s a less widely known tradition (I don’t even rightly know where it comes from) of Mashiach ben Yosef, that the messiah will be a son of Joseph.
During beit midrash time while I was visiting Hebrew College yesterday, we were reading closely through part of the Joseph narrative and it occurred to me that both messiah traditions have the messiah descended from non-Jewish women. Ephraim and Menasheh are born to Joseph’s Egyptian wife, Asnat, which would make any of their descendants of partially non-Jewish stock.
I’m not pointing this out because I think it’s troubling, but because I can’t be the first person to have thought of this. Anyone know of any drashes or teachings or anything about this?