I raise you Edward White Benson, Victorian clergyman subsequently Archbishop of Canterbury, who picked out Mary Sidgwick, 11-year old sister of his friend Henry Sidgwick, as his future wife when he was already in his ?20s. Their marriage was notably tense, at least partly due to the fact that she was pretty consciously sexually attracted to women (ended up in widowhood shacking up with another archbishop's female relative). EF Benson (of Mapp and Lucia fame) was one of their 6 offspring.