MITCHELL, Margaret, 63, of Zephyrhills, Fla., passed away Wednesday, January 10, 2007, in Dade City, Fla., under the care of Hernando-Pasco Hospice. She was born August 30, 1943, in Chicago, Ill., to William Von and Margaret (Gallagher) Brietzke, and came to Zephyrhills eight years ago from Farmington, N.Y. Mrs. Mitchell was a retail sales clerk and a Catholic by faith. She is survived by her brother, William Brietzke of Punta Gorda, Fla.