Age 33, of Upper St. Clair, died unexpectedly on Monday, April 19, 2021. He was the beloved son of Robert J. Brunn and Nancy Wagner; loving father of Belle Radolec; cherished brother of Michelle (Marcus) Diehl and Jason R. (Kristie) Brunn; adored grandson of Jane (the late Henry) Brunn and Patricia (the late George) Wagner; and uncle of Emilee Brunn; also survived by many uncles, aunts and cousins. Above all, Mike loved spending time with his family and friends. He leaves behind cherished memories of vacationing in Edisto Beach, fishing with his brother, and family dinners. He also passed down a love of music with his daughter, Belle. Mike's smile, laugh, and sense of humor brought joy to everyone around him, and he will be dearly missed by all those who were blessed to have known him. Family and friends are asked to attend a Mass of Christian Burial at 9:30 a.m. on Saturday at St. Paul of the Cross Parish, St. Anne Church in Castle Shannon. Please add tributes at beinhauer.com