Trevor Davis was born to Francis Caroline (Brooks) Davis and J. Montgomery Davis on December 10, 1892 in Alameda, California. At the age of three months, he came to Juneau with his mother who had gone south for the delivery.

Trevor began taking photographs in 1912 of the Juneau area and Southeast Alaska and continued until his retirement in 1969. For twenty-five years, he also owned the “Snappe Shoppe," a photography store located on Seward Street. In 1922, Trevor married Carol Beery, a musician, author and poet laureate of Alaska. One of Trevor’s more unusual possessions was a 12”x 20” negative camera that enabled him to photograph panoramic views of the Juneau area. The camera was previously owned by Ed Andrews, a Douglas photographer whose studio burned in the Douglas fire of 1937. Trevor Davis died in on March 6, 1990 in Juneau, Alaska.

Trevor’s mother, Francis Davis, was an artist, originally from London, and created many paintings of Alaska, some of which are in the Alaska State Museum. Davis Street, in Juneau, is named for J. Montgomery Davis, Trevor's father, who came to Juneau in 1891 to work for the Nowell Gold Mining Company.