Mary Katherine Preston, age 58, passed away on October 13, 2021 in Baton Rouge, LA. She was born September 26, 1963 in Los Angeles, California. The daughter of John Raymond Millar and Rita Jean Meiners and the twin to Candy Sue Long. She lived a long and happy life with her loving husband, Fred Preston, always close to her and a loving extended family of 11 siblings that were always in her heart and was known as "Cathy" her whole life. She married Fred Preston in November 1981 and they settled in Baton Rouge, LA. Mary is survived by her husband, Fred Preston, and a very large family. Her sisters: Barbara (Ryan), Nancy (Carter), Candy (Long), Susan (Collins), Jacque (Parry); and her brothers: Bruce (Millar), Robert (Millar) and Timothy (Millar). She was preceded in death by her parents and mother-in-law and her siblings, Peter Charles (Millar), Jonathan (Hawke) and Donna (Marshall). No funeral services will be held. Condolences may be sent to the family via her sister Susan at MKPreston1963.2021@gmail.com To send flowers to the family or plant a tree in memory of Mary Katherine (Millar) Preston, please visit our floral store.