Davern was born and raised in Edmonds, Washington. Brett attended Edmonds-Woodway High School as a member of the class of 2001.

During his summers, he would travel to Stagedoor Manor Theatrical Training Center in upstate New York.

After graduating from AMDA in New York he lived and auditioned in the city until landing a lead role in his first film.

After completing work on "Beautiful Ohio" he moved to LA where he has been ever since

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