The Very Rev. Richard Adam officiated the 2 p.m. ceremony. The reception was held at the Clarion Hotel, Davenport. Megan was given in marriage by James V. Costello IV and Matthew Costello, the bride's brothers, both of Davenport.
The bride is the daughter of Maura Costello, Davenport, and the late James V. Costello III.
Matron of honor was Brianne Parchert. Maid of honor was Meridith Costello, both bride's sisters. Best man was Richard McClintock, friend of the couple. Bridesmaids were Rebecca Costello, Abby Costello and Lyndsay Coon. Flower girls were Annabelle Costello, Elizabeth Parchert, Emalyn Costello and Grace Costello. Ringbearer was Andrew Parchert. Groomsmen were James V. Costello IV, Matthew Costello, Christopher Parchert and Jonathan Spencer.
Megan graduated from Davenport West High School in 2007 and will receive her MBA from Ashford University this winter. She is employed by the Rock Island Arsenal for the Civilian Human Resource Agency.
John graduated from United Township High School in 2006 and Marine Corps boot camp in 2006. He is employed by the U.S Army Corps of Engineers in Pleasant Valley.
The couple's new address is Davenport. The honeymoon destination was Wisconsin Dells.