LEWISTON – Richard and Diane Grandmaison of Lewiston are announcing the engagement of their daughter, Lisa J. Grandmaison of Maynard, Mass., to Timothy J. Lannen of Maynard, Mass., son of Wesley Lannen of Battle Ground, Wash., and Barbara Lawson of Billings, Mont.

Miss Grandmaison is a 1995 graduate of Lewiston High School and attended Clark University, where she received a bachelor’s degree in history and sociology and a master’s degree in communication. She is an investigator for the National Labor Relations Board in Boston, Mass.

Mr. Lannen is a 1994 graduate of Billings Senior High School in Billings, Mont., and received a bachelor’s degree in civil engineering from the University of Idaho and a master’s degree in structural engineering from Northeastern University. He is a software product designer for AutoDesk in Waltham, Mass.

A Catholic wedding at St. Cecilia’s Church and reception is planned for Dec. 1 in Boston. The couple will also celebrate their marriage with family and friends in Montana during the summer of 2008.