Koontz is the son of Billy and Melissa Koontz of Crane.
They will marry Oct. 20.
Quakenbush is a 1998 graduate of Bloomfield High School and is currently employed by Hinkle Contracting as their Safety Coordinator and Office Administrator.
Koontz is a 2005 graduate of Loogootee High School, a member of the Carpenters Local 1664 and is employed by Gohmann Asphalt & Construction.
The couple plan to reside in Scotland.