Wainwright (The Duke of Dominoes)
From Tardis Wiki, the free Doctor Who reference
Wainwright was a Minister of Grace.
In Chicago in the 1930s, she explained to the Master and Margie del Monsalvat how her people had destroyed the Godhead and separated it from the Thought Core to save the universe. It was her job to guard the Thought Core, which was located in Chicago at the Wainwright Museum.
Wainwright was killed by Margie, who used the Master's Tissue Compression Eliminator. (PROSE: The Duke of Dominoes)