Whilhemina "Mina" Wayne was a half-Dutch orphan from South Africa. She was one of the various members of the Wayne Family that was summoned by Lord Elwood Wayne to Waynemoor Castle in order to receive part of Elwood's inheritance. As her relatives, she was asked to stay one night in Waynemoor Castle and she became friends with her cousin, Bruce Wayne. During the night, she was attacked by the "Ghost of Lord Harold", the first Lord of Waynemoor Castle and she was saved on two occasions by Batman. As the night ended and Batman captured the man behind the attacks, Wilhemina attended the funeral ceremony of Elwood Wayne, who didn't survive the night.
- This version of Wilhemina Wayne, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 1 Appearances of Wilhemina Wayne (Earth-One)
- 1 Images featuring Wilhemina Wayne (Earth-One)
- Quotations by or about Wilhemina Wayne (Earth-One)
- Character Gallery: Wilhemina Wayne (Earth-One)