Mary Catherine Heitzner Obituary

We are sad to announce that on April 9, 2025 we had to say goodbye to Mary Catherine Heitzner (Newmarket, Ontario). You can send your sympathy in the guestbook provided and share it with the family.

She was predeceased by: her husband Frank; and her parents, Daniel O'Leary and Mary O'Leary. She is survived by: her children, Paul (Deb), Anne Marie (Tim), Maureen (Jim) and John (Lisa); her grandchildren, Katie, Maddi, James, Ben and Jackie; her sister Marg (Brent); her siblings-in-law, Pat and Bill; and her siblings, Mike, Joe and Dorothy. She is also survived by many nieces and nephews.

Should you wish, in lieu of flowers, consider a donation to Southlake Health Foundation.