Helen Demchak, 85, of Clairton, died Monday, Nov. 5, 2007, in UPMC Presbyterian, Oakland. She was born Nov. 13, 1921, in Rankin to the late Andrew and Helen Gretulla Kohut and was a member of St. Clare of Assisi Parish, Clairton, and the Mothers Club of the former St. Joseph Church, Clairton. Wife...