Peter Donat dead: The X-Files star dies aged 90

Peter Donat Dead The X Files Bill Mulder Father

Peter Donat Dead The X Files Bill Mulder Father

Actor Peter Donat, who starred as Fox Mulder's father in The X-Files, has died.

His wife, Maria Donat, told The New York Times the cause was complications of diabetes.

According to the outlet, despite being most known for his recurring role on the popular drama series - he appeared on six episodes - he preferred his work in theater. However, the Canadian-born actor's career spanned across stage and film, as well.

"He had an easy gravitas as a performer and seemed to come from that generation that took the art seriously but not too seriously", Duchovny wrote of Donat in an email to The Times. The actor frequently performed with companies like the American Conservatory Theater in San Francisco and the Stratford Festival in Canada. His film credits include "The Godfather Part II", "The War of the Roses" and "The Game".

20, 1928, in Kentville, Nova Scotia, he made a decision to go into acting after being inspired by his uncle, British film star (and Oscar winner) Robert Donat.

Donat was married to The Waltons actress Michael Learned from 1956 to 1972. Donat was once considered for the role of Tom Hagen in The Godfather, but it ultimately went to Robert Duvall. Donat also played Otto Kerner in Coppola's Tucker: The Man and His Dream in 1980.

In addition to his wife, Donat is survived by his sons, Caleb, Christopher and Lucas; two stepdaughters, Barbara Park Shapiro and Marina Park Sutton; a stepson, Malcolm Park; 11 grandchildren; and his brother, Richard, who is also an actor.