Dan Haggerty, Grizzly Adams Actor Died This Thursday At Age 74 Dan Haggerty, Grizzly Adams star in the 1970s TV series and film, died ealier this week at the age of 74. He fought a long battle with cancer, and it finally got the better of him. Haggerty was the star of The Life and Times of Grizzly Adams, a movie and later on, a TV show. I talked to him yesterday and told him were praying for him, Bomar, his manager, said. I told him I love you, man. The last thing I heard him say was I love you. Haggertys legacy will move on with his 5 children and 2 grandchildren. They are undoubtedly going through a very rough time. Pray for them. RIP Dan Haggerty. 