FRONTENAC, Mo. – Sister Marie Annette Seymour, RSM, a Sister of Mercy of the Americas for 63 years, died May 20, 2025, at Catherine’s Residence in Frontenac. She was 82.
Born May 14, 1943, in Meridian, Mississippi, she was the daughter of Edward and Jamie Seymour.
She is survived by her sisters, Linda Foster (Steve), Connie Robert (Pete), Janice Hess (Buddy) and Luky Seymour (Gene); her brother, Sid Seymour (Liz); and many nieces, nephews and friends. She was preceded in death by her parents and siblings Laura Opperman (Fred), Jimmy Seymour and Leo Seymour (Nancy).
Sister Annette graduated from St. Francis Xavier in Vicksburg, Mississippi, in 1962. She entered the Religious Sisters of Mercy on Sept. 8, 1962, and received the name Sister Mary Charisse. She professed her first vows in 1965 and made perpetual profession on Aug. 16, 1970. Her ring motto was “Love Conquers All.”

She earned a bachelor’s degree in English with a certificate in secondary education from Saint Louis University, a Master of Arts in communication studies from the University of Notre Dame, and a certificate in spiritual direction from Mercy Center in Colorado Springs, Colorado. She was also certified as a Healing Touch practitioner.
Sister Annette taught at St. Joseph Parish School, St. John’s Inter-Parochial High School and Sacred Heart High School, all in Mississippi. She served in campus ministry at St. Peter’s Cathedral in Jackson, Mississippi; Maplewood Community College in New Orleans; the University of Southern Mississippi in Hattiesburg; and Radford University in Richmond, Virginia. She also served for four years as vocation minister for the Sisters of Mercy of the Americas.
Later in life, she offered Healing Touch therapy at Pratt Cancer Center, Mercy Hospital St. Louis and Mercy Center in St. Louis.
Sister Annette enjoyed dancing, singing and cooking. She cherished time with family and friends, valued lifelong learning and supported the arts.
A liturgy was held Saturday, May 31 at the Mercy Conference and Retreat Center in Frontenac. Interment was private at Calvary Cemetery in St. Louis.
Memorial donations may be made to the Sisters of Mercy, Attention: Sister Christine Blair, RSM, 2039 N. Geyer Road, St. Louis, MO 63131.