William Bainbridge was born in Nebraska where he met and married his wife Lillian. Shortly after their marriage they moved to Seattle where they had two children and lived for the remainder of their lives. William Bainbridge was a long time employee of Pacific Telephone and Telegraph Company and served as Supervisor of Cable Methods during the submarine cable laying project in 1928. He retired from the company in 1946 and died in 1967.
From the guide to the William R. Bainbridge Collection on Submarine Cable Laying Operations, 1927-1946, (Museum of History & Industry Sophie Frye Bass Library)