[Pitchwife]

Sorry, G55, this one makes me feel as lost as a hobbit in Moria.

We in the first stanza could be the world, his wife and his sister-in-law's former roommate's second cousin thrice removed, i.e. more or less everything and everybody - the Children of Ilúvatar, the three Kindreds of the Elves, the Houses of the Edain, the various breeds of Hobbits, the Ainur, the Fellowship, Ents and Entwives, you name it. (OK, it doesn't make that much sense for all and each of them, but you get the picture.)

But it's the second stanza that's really mysterious for me - except I'm wondering whether the man might be nobody from Middle-earth but perhaps the good Professor himself?