Parents of the couple are Ed and Cathy Ortmann of Le Mars, and David and Denise Wirth of Ames.
The couple is planning a Nov. 4, 2006, wedding at St. Cecilia Catholic Church in Ames.
Lindsey is a 2001 graduate of Gehlen Catholic High School and graduated from Iowa State University with an early childhood education degree. She is employed as a pre-kindergarten and K-8 technology teacher by Assumption School in Granger.
Aaron is a 2000 graduate of Gilbert High School and is employed as an electrician with Thompson Electric in Ames.