The Cablevision founder helped usher in a new era for television. He also acquired sports and entertainment properties including MSG and the New York Knicks.

Charles Dolan, founder of HBO, AMC, and more, died at the age of 98 of natural causes, reports Newsday, an outlet the family owned. “It is with deep sorrow that we announce the passing of our beloved father and patriarch,

Charles F. Dolan, the pioneer and businessman who founded HBO in the early 1970s, merged a group of Long Island cable TV systems into Cablevision, and later created the channel AMC, has died. He was 98.