Cavin Daniel Costello, the son of Donna and Tim Costello of Guilford, is engaged to wed Claire Elise Aton, the daughter of Charles and Nan Aton of Phoenix, Arizona. The future groom's grandparents are the late Mr. and Mrs. Costello and the late Richard Launder and Gail Cody. The future bride's grandparents are the late Mr. and Mrs. Walker, the late Charles Emory Campbell, Jr., and Dr. and Mrs. Aton.

The future groom is a 2003 graduate of Guilford High School. He earned a bachelor's of science in architecture in 2008 and a master's of architecture in 2009. He is currently the chief designer at The Ranch Mine.

The future bride graduated from Xavier College Preparatory in 2004. She earned concurrent degrees in English and communication in 2008 from the University of Colorado at Boulder. She is currently the chief executive at The Ranch Mine.

A spring wedding is planned.