(18 June 1906 - 7 December 1933) (his death)
On June 18, 1906, at her father's apartment on Riverside Drive and 95th Street in New York City, New York, Cowl married Adolph Edward Klauber, the drama critic of The New York Times. A former actor and son of a prominent Jewish photographer in Louisville, Kentucky, Klauber left the Times in 1918 to become a theatrical producer and manager. He and Cowl separated in 1930, shortly after his health began to fail. Klauber returned to live "in strict seclusion" in Louisville, where he died in 1933. The couple had no children.