MARSHALL Anna Thomas and Seth Pearson announce their engagement. Parents of the couple are Will and Candace Thomas of Marshall and Mary Bjorgaard and Steve Pearson of Danbury, Wis. Thomas is the granddaughter of Bill Thomas of Clinton, S.C. She is a 2009 graduate of St. Olaf College. Pearson is a 2005 graduate of the University of Minnesota-Duluth. Both are employed by Northwest Passage, Limited, in northwestern Wisconsin. The couple plans to be married at Park Point in Duluth in late summer 2012.