His daughter Patricia confirmed his death to The Canadian Press from Orr's home in Parry Sound, Ont., but would offer no further details.
Much like his son, Douglas Orr was a terrific athlete who excelled in hockey and track. But rather than pursuing a professional career, he ended up joining the navy and served as a packer of dynamite at a munitions factory.
He and wife Arva settled in Parry Sound, Ont., after the Second World War and had five children, including Bobby, who would revolutionize the way hockey was played with his attacking style from the blue-line.
Known for his breathtaking end-to-end rushes with the puck and his hard-as-nails fortitude, Bobby Orr became the first defenceman to lead the league in scoring in 1969-70 and set a record with 102 assists the following year - a mark that still stands for defencemen.
Bobby Orr would dominate the NHL for nearly a decade before chronic knee problems forced him to retire.