This topic might have a better name.
Pete Tyler and Jackie Prentice's wedding, or Pete and Jackie Tyler's wedding. No other page seems to use the full Peter.
Talk about it here.
In 1986, the Ninth Doctor and Rose Tyler attended the wedding of Pete Tyler and Jackie Prentice. (TV: Father's Day)
In 2007, the Tenth Doctor noted his attendance of the wedding to a Pete Tyler who had come from the 2010 of a parallel universe, recalling that "[Pete] got her name wrong." (TV: Doomsday)