Age 94, of Mt. Lebanon, died on Thursday, April 14, 2022. Never one to waste time, Mark took his first job at 15, selling shoes in his hometown of Jackson, Michigan. He earned 35 cents an hour and discovered a gift for sales. He went on to serve with the Marine Corps in China and then attended college before starting his career in hydraulics supply. Mark moved to Pittsburgh with his family in 1961, where he partnered with Bob Miller to build the successful hydraulics company, RL Miller, Inc. When he retired at the age of 83, he was still doing aerobics with people decades younger. He traveled, joined discussion groups at the library, and volunteered with the Mt. Lebanon United Methodist Church. Curious and caring to the end, Mark read about everything from the American Revolution to cryptocurrency. And when he asked how you were, he listened to the answer. He aged with grace, good humor, and plenty of Klondikes. He is survived by his wife of 41 years, Judy Crain Lewis; his children, Ian Patrick Lewis, Amy Lewis Grimm (Jim), Melissa Lewis, Mark T. Lewis, Jr. (Sandy), Julie Rubin (Amy Reznik) and Donna Rubin; grandchildren, Erin Grimm, Rachel Grimm Martinic (Brian) and Wesley Grimm (Becka); and great-grandchildren, Raine Grimm, Lynlee Grimm, Louis Martinic and Fiona Martinic. All are welcome to attend his Memorial Service in Mt. Lebanon United Methodist Church, on Tuesday, April 19, 2022 at 2:00 p.m. Friends will be received by the family at the church following the service. The family requests NO FLOWERS, please. If desired, contributions in Mark’s memory may be made to Mt. Lebanon United Methodist Church, 3319 W. Liberty Avenue, Pittsburgh, PA 15216.