Michael J. Costello Obituary
With profound sadness, we say goodbye to Michael J. Costello of Milltown, Wisconsin, born in Frederic, Wisconsin, whose vibrant spirit touched the lives of many. Michael left this world on August 13, 2025 at the age of 64, leaving a void in the lives of so many people. You can send your sympathy in the guestbook provided and share it with the family. You may also light a candle in honor of Michael J. Costello or send a beautiful flower arrangement to the funeral service.
He was predeceased by: his parents, James Costello and Rachel Costello; and his siblings, Rita Arellano and Patrick Costello. He is survived by: his significant other Mary Berg; his son Michael Costello (Sheena); his grandchildren, Adeline, Emmett and Liam Costello; and his siblings, Jim Costello (Karen), Mary Nelson, Colleen Simon, Kitty Coen and Jean Kemmits. He is also survived by his many nieces, nephews.
