M.W. Bro. David James Cameron was born and raised in London, Ontario, Canada and attended the University of Western Ontario.

His wife, Jill, also grew up in London. They lived in Toronto for several years but when their son, James, was born they moved closer to home, settling in Waterloo, and Dr. Cameron took up a family medicine practice in the small town of New Hamburg.

Bro. Cameron was initiated into Freemasonry in Grand River Lodge No. 151 Kitchener-Waterloo in 1991. As Junior Warden he brought Masonic Education to every meeting by linking the food served to an educational topic. He became Worshipful Master in 2001. A charter member of Templum Lucis Lodge No. 747, Stratford - the province’s second Observant lodge, he has been honoured with memberships in Centennial No. 684 and St. John’s No. 20, and is also a member of Heritage Lodge No. 730. M.W. Bro. Cameron is a 33° Scottish Rite Mason and a member of the Royal Arch, Allied Masonic Degrees, Royal and Select Masters, Shriners and the Royal Order of Scotland. He is a Fellow of the College of Freemasonry.

He was appointed Assistant Grand Chaplain in 2005 and elected to the Board of General Purposes in 2007. He has served as Chair of Masonic Education, Lodge Resources, and the Management Committee, and has been a Director of the Masonic Foundation of Ontario. He has spoken at Masonic events in Canada, the United States and Europe, including the 14th World Conference of Regular Masonic Grand Lodges. M.W. Bro. Cameron was installed as Grand Master of the Grand Lodge of Canada in the Province of Ontario in July 2019.