Are you researching in Glarus? I have a line of SCHIESSER from Schwanden. The most resent one is Rosina SCHIESSER, b. 28 October 1739, daughter of Kasper SCHIESSER and Magarethe ZOPFI of Schwanden, Glarus, Switzerland. She married Fridolin ZIMMERMAN. A grandson or great-grandson, Thomas ZIMMERMAN, came to the USA about 1859 and was among the first settlers of Otter Tail County, Minnesota. He is my ancestor.