Wife

Some time after leaving the First Doctor, Ian Chesterton and Barbara Wright encountered the Eleventh Doctor. They helped him stop the Prometheans from changing Earth history, and got married shortly thereafter. (COMIC: Hunters of the Burning Stone)

Polly Wright and Ben Jackson married many years after they stopped travelling with the Second Doctor. (PROSE: That Time I Nearly Destroyed the World Whilst Looking for a Dress, AUDIO: The Five Companions)

Jo Grant left the Third Doctor after deciding to become Professor Clifford Jones wife. (TV: The Green Death) They were still married decades later when she met Sarah Jane Smith and the Eleventh Doctor. (TV: Death of the Doctor)

Bernice Summerfield was Jason Kane's wife (PROSE: Happy Endings) for some time, but they eventually divorced. (PROSE: Eternity Weeps)

Amy Pond became Rory Williams's wife in 2010. (TV: The Big Bang) They remained together even after being permanently sent back to 1938 by a Weeping Angel. Thus, much of their married life occurred before their actual wedding. (TV: The Angels Take Manhattan)

River Song had at least two wives. (TV: The Wedding of River Song) She was also her own wife, as she had married herself on every planet where this was possible. (AUDIO: Someone I Once Knew)