The Fourth Doctor, played by Tom Baker, meets River Song, played by Alex Kingston. Taken from 2018’s The Diary of River Song Series 4 - Someone I Once Knew. Buy series 4 here: www.bigfinish.com/releases/v/...
It would be hard for them to work it into River's timeline. Although maybe we'll see it they could make it work if River loses her memory or something.
@@collinjohnson5500 funny enough there was a more recent novel with river song where she goes "Then theres my husband or sometimes occassional wife, the doctor." I'd really love to see what type of meeting they had where river just accepted "alright I have a wife now too"