Marshall Acker died on Friday, February 21, 2020 while on a trip to Wyoming. He was born in Dallas, Texas on January 20, 1977 and attended Avon Old Farms School in Connecticut, theUniversity of Kansas and Montana State University, but his great love was for outdoor adventures. He hiked glaciers in Washington, went ice climbing in Colorado and canoed downthe Rio Grande River. He also rode elephants in Thailand, went bungee jumping in New Zealand and was a sky diver. Over time, Marshall turned his love into his profession and guided grouphorseback rides and fly fishing trips in the Bighorn Mountains for the Spear-O-Wigwam Ranch in Wyoming. More recently, he was the owner of Capitalize Fitness working as a trainer to helppeople meet their fitness goals. While Marshall often struggled with depression, he had a remarkable life filled with wonderful friendships with no closer friend than his older brother Tyler. When their mother Sandy married Dr. Joe Shepard, the brothers were quickly taken in by the larger Shepard clan and they enjoyed many, happy holiday gatherings along with group trips to Santa Fe and the Bighorn mountains in Wyoming.Marshall Acker is survived by his mother, Sandy Shepard, his brother Tyler Acker, his nephew Myles Shepard and sisters Jill (Shepard) Kraus and her husband Marc and Erin (Shepard) Davisand her husband Steven. He is also survived by his father, Dr. Barry Acker, his aunt Susan Braden along with her son Arthur Braden and his wife Molly. He was preceded in death by Dr. Joe Shepard, his brother Michael Shepard, his grandparents Mr. and Mrs. John Riehm and his uncle Jack Riehm.A memorial service will be held at First Christian Church of Tyler at 10:00 a.m. Saturday, March 7, 2020.A private memorial service will be held later this summer at Spear-O-Wigwam Ranch in Wyoming. In lieu of flowers, the family suggests that you consider a donation to the non-profit organization of your choice,in memory of Marshall, to the First Christian Church Mission TripFund or to ARC of Smith County to acknowledge Marshall’s love of his brother Tyler and others with special needs.Kane Funeral Home has been entrusted with local arrangements.