Peter John Mathey, 94, of White Lake, SD passed away Friday, February 11, 2022 at Aurora-Brule Care & Rehab in White Lake. Funeral Mass is 10:30 AM Tuesday, February 15, 2022 at St. Peter’s Catholic Church in Platte, SD. A Committal Service with Military Honors will follow at St. Peter’s Catholic Cemetery. Visitation will be held at the church one hour prior to services on Tuesday. Mount Funeral Home of Platte is assisting with arrangements. Expressions of sympathy may be extended to the family through mountfuneralhome.com.