Kenneth Welsh is Canadian-American film and television actor (sometimes credited as Ken Welsh). He is known to Twin Peaks fans as the multi-faced villain Windom Earle, and he is also known as the father of Katharine Hepburn (Cate Blanchett) in Martin Scorsese's The Aviator.
In 1984 he was nominated for a Geni Award as Best Actor for his portrayal of Reno Colt in the film "Reno and the Doc", written and directed by Charles Dennis. In 1997 Welsh directed Dennis in the latter's play "SoHo Duo" at the West Bank Theatre in New York City.
Welsh was born in Edmonton, Alberta to a father who worked for the Canadian National Railway. He grew up in Alberta and studied drama at school. He later moved to Montreal and attended the National Theatre School. Following graduation, he auditioned for the Stratford Festival in Ontario and then spent the first seven years of his career on stage.