Mary Kathleen Hennessey Obituary
Mary Kathleen Hennessey of Saint Augustine, Florida passed away on September 24, 2026. Mary Kathleen, born on October 1, 1945, shared life alongside family, friends, and others. You can send your sympathy in the guestbook provided and share it with the family.
Mary Kathleen will be remembered for the impact she had on the lives of those around her. Friends, family, and colleagues will cherish their memories and the time shared. Those who knew Mary Kathleen will remember moments of kindness, warmth, and presence. Though words cannot fully capture her life, the legacy of connections and experiences remains. Mary Kathleen’s absence will be deeply felt by those who valued her companionship.
She was predeceased by: her husband Michael G. Hennessey; her parents, William Demeritt and Kathleen Demeritt; and her brother Richard Demeritt. She is survived by: her daughters, Jeanette (Jeff Mitchell), Chrissy (John Lowe) and Michelle (Robert Martin); and her brother William Demeritt II (Linda). She is also survived by her grandchildren; and many nieces, nephews, extended family members, and dear friends.
A funeral Mass will be held on Monday, October 12th 2026 at 10:00 AM at the San Sebastian Catholic Church (1112 FL-16, St. Augustine, FL 32084-8596).
Memorial contributions may be made in Mary's memory to Catholic Charities or the St. Augustine Humane Society.
