Mary Brent Marcilliat, a long-time resident of Pace, Florida, passed away peacefully at home on December 18, 2025. Born on February 16, 1959 to Joann Hart and Robert Brown, Mary spent her formative years in many different places due to her father's career in the U.S. Navy. Along with her future husband, Mark Marcilliat, she attended Woodham High School in Pensacola. The two were wed in 1979 and celebrated their 46th anniversary last month. Mary's chosen profession was nursing, which aligned perfectly with three of her finest attributes – her patience, kindness, and compassion. After working many years as an RN, she returned to school and earned her master's in health informatics. She spent the most recent years of her career implementing new healthcare systems in HCA hospitals around the country. The epitome of a selfless giver, Mary was a gentle spirit who loved her family deeply. Her true joy was her children, their partners, whom she loved as if they were her own, and her grandchildren. Mary was a whiz in the kitchen, an avid reader, and a lifelong explorer, finding joy in new cultures, technology, and travel.

Mary is preceded in death by her parents and her two brothers and is survived by her husband, Mark; sister, Cindy Davis; three beloved daughters, Ryan Wieczorek (Tim), Maggie Larche (Spencer), and August Marcilliat (Ames Williams); and six grandchildren, Kellan, Alex, and Fisher Wieczorek and Finn, Eleanor, and Ollie Larche.

A Visitation will be held Monday, December 22, 2025, from 1:00-3:00 pm at Harper-Morris Memorial Chapel to be followed by a Celebration of Life at 3:00pm. In lieu of flowers, memorial contributions may be made to St. Jude Children's Research Hospital.