Foote, Lisle (2014). Buster Keaton's Crew: The Team Behind His Silent Films. Jefferson, NC: McFarland & Company. p. 161. ISBN978-0-7864-9683-9. "By August 1917, Havez filed suit for separation. They aired their mutual grievances in the newspapers: he charged that she had dumped him after she'd become a success and bragged about her earnings, and she said that he was lazy and she'd been supporting him for years. The divorce was finalized in 1918."
familysearch.org
"New York, New York City Marriage Records, 1829-1938", , FamilySearch (https://www.familysearch.org/ark:/61903/1:1:24Q7-857 : Tue Feb 20 19:51:57 UTC 2024), Entry for Jean C. Havez and Edna Cecil Cunningham, 7 Jan 1915.