Pati Behrs Eristoff (February 13, 1922 – July 4, 2004) was a Russian American prima ballerina and actress.

Pati Behrs Eristoff was a prima ballerina and a grandniece of Leo Tolstoy.

She survived World War II and Occupied France by dancing in Parisian nightclubs, while at the same time doing all she could to hide Russian Jews and gypsies from the Nazis.

[3] In December 1947 she met John Derek in an acting class, and they married on October 9, 1948.

An animal-rights advocate, she presented Actors and Others with her 1926 Steinway baby grand piano.