Mary Ann Koerbel, on Friday, March 12, 2021, surrounded by loving family; our Mary Ann went to be in God's care. She is survived by her loving husband Ronald J. Koerbel; Mother of Betty Lou (Roy) Bartley and the late Ronald L. and Robert L. Koerbel; Loving Grammy of Seirra Koerbel, Megan, and Collin Bartley. Beloved Niece of Katherine Wyko; Sister of Judith Anselm, Beverly Rogers, Carol Vignale, and the late Andrew Michael Marunczak. Preceded in death by her parents, Andrew and Anna Marie Marunczak. Survived by many nieces, nephews, and loving friends. Mary was a loving angel to all. She took great care of everyone and loved to cook for them. She had such a fun-loving personality and will be greatly missed. She will always be in our hearts. Friends will be received on Wednesday, March 24th from 2:00 - 6:00 pm at the Thomas P. Kunsak Funeral Home, Inc., 3552 California Ave. at Davis Ave., Pittsburgh, , PA 15212. A Service will be held after visitation for the family.