Frank had a janitorial business for nearly 40 years. He was baptized as one of Jehovah's Witnesses in 1976.
Frank is survived by his wife, Jacqueline (Jackie), his daughters, Rosanna Schlagel and Melissa Schlagel; his son, Barnabas (Heather) Schlagel and granddaughter, Lilly Buttens. Frank is also survived by his sister, Rose (Roy) Buckner, and his brother, William (Ellen) Schlagel. His parents preceded him in death. His brothers, Richard Heidenreich, Henry Heidenreich, Daniel Schlagel and his sister, Barbara Kaufhold, also preceded him.
A memorial service will be held on Saturday, September 28, 2019 at 2:00 pm at the Kingdom Hall of Jehovah's Witnesses, 217 Harmon Rd, Chehalis, WA 98532