Mary A. Halmich, age 80 of Sullivan, MO, passed away Wednesday, June 7, 2017 at Life Care Center in Sullivan. Mary Agnes Ann was born on August 15, 1936 to John and Rose Margaret (Jeniciek) Seidmeyer in St. Louis, MO. Mary grew up and attended school in St. Louis, MO. After the death of her mother, Mary went to live at the Catholic Orphanage where she also attended school. On April 28, 2001 Mary was united in marriage to Darwin Halmich in Sullivan.