Matt Duffer – 2017 Writers Guild Awards L.A. Ceremony – Arrivals – The Beverly Hilton Hotel, 9876 Wilshire Boulevard – Beverly Hills, CA, USA – Photo Credit: Julian Blythe/HNW / PRPhotos.com
Birth Name: Matthew Christensen Duffer
Place of Birth: Durham, North Carolina, U.S.
Date of Birth: February 15, 1984
Ethnicity: Danish (maternal grandfather), Irish, likely English
Matt Duffer is an American film and television writer, director, and producer. Together with his twin brother Ross Duffer, Matt is a member of the Duffer brothers screenwriting team. They are known for creating web television series Stranger Things.
Matt is the son of Ann Marie (Christensen) and Allen Pace Duffer.
Matt’s maternal grandfather was Carl Ravn Christensen (the son of Nels/Niels Peter Christensen and Matte Marie Ravn). Carl was born in the U.S., to parents from Denmark.
Matt’s maternal grandmother likely is Estelle O’Connell.
Sources: Obituary of Matt’s maternal grandfather, Carl Christensen – http://www.legacy.com