Mary Louise Devillier Gainey

Mary Louise Devillier Gainey, beloved mother, grandmother, sister, and friend, passed away on Sunday, November 30, 2025, at the age of 89. Mary was born on November 25, 1936, in Baton Rouge, Louisiana, daughter of the late J. Weston Devillier Sr. and Cecilia Thomassee Devillier. She graduated from St. Anthony High School and devoted her career to serving the Catholic Diocese for over 40 years at St. Anthony, Redemptorist and St. Jean Vianney parochial schools as a secretary and bookkeeper, where her warm spirit positively impacted many lives. Mary was an active member of the Catholic Daughters, the Red Hat Society, and Threads of Love, where her passion for community and fellowship shone through.

In her leisure time, she found joy in crocheting, knitting, reading, and sewing—often with melodies of her favorite artist playing in the background, Elvis Presley. However, nothing brought her greater happiness than the cherished moments spent with her beloved grandchildren in Houston.

Mary is preceded in death by her husband of 58 years, Bethel Edward Gainey, Jr.; parents, J. Weston Sr. and Cecilia Thomassee Devillier; son, Clint E. Gainey; sister, Catherine Devillier and brother-in-law, Gaston Patin, and sister Betty Ann Devillier and brother-in-law Kenneth Hodges; and brother J. Weston Devillier, Jr. and brother John D. Devillier Sr. .and sister-in-law Irene, and brother Frank P. Devillier.

She is survived by her daughter, Cynthia K. Lundgren, and her husband James P; son, Mark W. Gainey; grandchildren, Paige Lundgren Berta and her husband Matthew, and Weston B. Lundgren; sisters, Viola Devillier Lambert and Carolyn Devillier; and numerous nieces and nephews.

A special thanks is given from the family to Audubon Home Health/Hospice, the Baton Rouge Clinic, the FMOL team at Our Lady of the Lake Regional Hospital and Griswold Home Care for the exceptional care given to Mary. The family would like to invite all who knew and loved Mary to join them as we commemorate her life. A visitation will be held at Resthaven Funeral Home, 11817 Jefferson Hwy., in Baton Rouge, on Friday, December 12, 2025, from 12:30 PM until funeral services at 2:30 PM, with graveside services to follow.

In lieu of flowers, the family kindly requests that donations be made to a charity of your choice or suggest planting a memorial tree in Mary’s name.

Family and friends may order memorial trees in Mary’s name, sign the online guestbook, or leave a personal note to the family at www.resthavenbatonrouge.com.