Gregory Keith Marksbury

Gregory Keith Marksbury, 71, died on March 14, 2021, at home while surrounded by his loving family.

Gregory was born on July 13, 1949, in Monterey Park, to Ollie and Cornelia Marksbury. He spent part of his childhood in Missoula, Mont., before settling in West Covina. He attended Mt. Lowe Military Academy and graduated from Charter Oak High School, where he was a varsity football player. Gregory later attended Cal State University Los Angeles, where he earned his bachelor’s degree in accounting.

Gregory had a lifelong love of airplanes and flying, and earned his commercial pilot's license while he was still in high school. He worked alongside his father at Marksbury Bookkeeping and Tax Service, Inc. in Yucaipa, until his father passed away in 1986, and Gregory took over the business himself.

Gregory and his wife, Megan, were married in 1984, and his family was the pride and joy of his life. Gregory was heavily involved in his daughters athletic pursuits, which included competitive golf, soccer and swimming.

Gregory was a skilled golfer himself, and maintained a single-digit handicap for much of his life. He was a longtime member of the Calimesa Men’s Club, where he was the club champion and senior club champion numerous times, and served as the club’s treasurer for over 20 years.

Gregory will be lovingly remembered by all who knew him as a person who made you feel truly special. His inquisitive nature was universally endearing, and his clients routinely crossed state lines or traveled for hours just for the opportunity to visit him for their annual tax appointment. His memory will be forever cherished.

Gregory is preceded in death by his mother, father and beloved brother, Jeffrey. He is survived by his wife of 37 years, Megan Marksbury, his daughters, Jessica Griffin and Holly Marksbury, son-in-law Paul Griffin, from Co. Cork, Ireland, son-in-law-to-be, Chad Corley, a Marine sniper from Phoenix, Ariz., and grandchildren Zella and Vann Griffin.

Gregory’s celebration of life will be held on Saturday, April 3, at 11 a.m. You can register to view the live stream via Zoom at