Patti's last marriage, in 1899, was to Baron Rolf Cederström (1870–1947), a priggish, but handsome, Swedish aristocrat many years her junior. The Baron severely curtailed Patti's social life. He cut down her domestic staff from 40 to 18, but gave her the devotion and flattery that she needed, becoming her sole legatee. After her death, he married a much younger woman. Their only daughter, Brita Yvonne Cederström (born 1924), ended up as Patti's sole heir. Patti had no children, but was close to her nieces and nephews. The two-time Tony Award-winning Broadway actress and singer Patti LuPone is a great-grand niece and namesake. Drummer Scott Devours is her 3rd great nephew.