Joseph Seligman was an American banker and businessman who founded J. & W. Seligman & Co. He was the patriarch of what became known as the Seligman family in the United States and related to the wealthy Guggenheim family through Peggy Guggenheim's mother Florette.

Marguerite "Peggy" Guggenheim was an American art collector, bohemian, and socialite. Born to the wealthy New York City Guggenheim family, she was the daughter of Benjamin Guggenheim, who went down with the Titanic in 1912, and the niece of Solomon R. Guggenheim, who established the Solomon R. Guggenheim Foundation. Guggenheim collected art in Europe and America between 1938 and 1946. She exhibited this collection as she built it. In 1949, she settled in Venice, where she lived and exhibited her collection for the rest of her life. The Peggy Guggenheim Collection is a modern art museum on the Grand Canal in Venice, Italy, and is one of the most visited attractions in Venice.