Walter Mayo was a film production manager and assistant director active between the 1920s and 1940s. Mayo was born on November 05, 1898 in Macoupin County, Illinois. He is credited for films inclduing the Howard Hughes-produced Two Arabian Knights (1927). Mayo died on August 13, 1965 in Los Angeles, California.

Sources:

"Walter Mayo." Turner Classic Movies. 2021. Accessed October 28, 2021. https://www.tcm.com/tcmdb/person/1205759%7C153521/Walter-Mayo