Terence Kelly
Terence Reginald Kelly (born June 12, 1944) is a Canadian film, television and stage actor. He is best known for his roles as RCMP officer Sgt. Wilkes in Red Serge, for which he garnered a Gemini Award nomination for Best Actor in a Dramatic Program or Mini-Series at the 2nd Gemini Awards in 1987, and as Grandpa Heffley in the Diary of a Wimpy Kid series.
Known for
The Exorcism of Emily Rose 
Borderline 
In the Name of the King: A Dungeon Siege Tale 
Diary of a Wimpy Kid: Rodrick Rules 
Diary of a Wimpy Kid: Dog Days 
Mr. Magoo 
Married Life 
In Their Skin 
When a Stranger Calls Back 
A Christmas Miracle for Daisy 
Rags 
Boundaries 
Window Wonderland 
A Glenbrooke Christmas 
A Royal Runaway Romance 
Love in Store 
Beyond the Stars 
Just One Kiss 
Love, Again 
The Picture of Christmas 
The Golden Seal