Winifred Marjorie Wagner was the English-born wife of Siegfried Wagner, the son of Richard Wagner, and ran the Bayreuth Festival after her husband's death in 1930 until the end of World War II in 1945. She was a friend and supporter of Adolf Hitler, himself a Wagner enthusiast, and she and Hitler maintained a regular correspondence.

Siegfried Helferich Richard Wagner was a German composer and conductor, the son of Richard Wagner. He was an opera composer and the artistic director of the Bayreuth Festival from 1908 to 1930.