Rene? and John Witherup of Ortonville are pleased to announce the engagement of their youngest daughter, Colby Elizabeth, to Ethan Forrest Karsen, son of Terry and Craig Karsen of Highland Park, Ill..
The bride-to-be is a graduate of Brandon High School. She will graduate in June from Northwestern University in Evanston, Ill., with a degree in environmental conservation.
The groom-to-be is a graduate of Northwestern University.
A July wedding is planned in Chicago.