Thornhill, Joyce, of St. Charles, Missouri, died on Sunday, September 4, 2011 at the age of 54. Dearest daughter of Dewey Thornhill and the late Dolores Thornhill; dear sister of Sandra Summer, Gary (Deborah) Webb and Mary (Steven) Everingham. She was a loving niece, cousin, aunt, great-aunt and friend to many. She will be dearly missed by all. There are no services or visitation.