Blind item from the last century's literary world

Half-century-old blind item: An anonymous user asked the MetaFilter offshoot MetaChat to help find the name of the poet her artist aunt had an affair with in 1950s New York. As the aunt is getting up there in years, the user had only a few clues to go on.

He is anthologized "in that famous book with all the poems." "The Oxford Book of English Verse?" I said, "Yes," she said but then you can't really rely on her and titles. His most famous poem was something about his drunken Irish mother and her shaking hands. But he's not Brendan Behan; I asked. He was probably born in the teens, since he told her a story about eating one of the queen's swans during the Depression. She was born in 29 and said he was a little older than her.

This being the age of lightning fast information retrieval (and strangers who love the challenge of meddling in other peoples' lives) it took one commenter all of 23 minutes to come up with the answer, and likely even less considering they probably didn't read the post instantly. The upshot is that a lot of people are now interested in both the poet and the aunt's paintings, but that's always been the classic pro-gossip argument, right?