Jon and Susan Cordell of Lawrenceville, announce the engagement of their daughter, Erin Rachael Brock of Lawrenceville, to Scot Galphin Jr. of Suwanee, the son of Scot and Alicia Galphin of Suwanee.

The bride-elect is the granddaughter of Bill and Janet Thompson of Austell and the late Hamrick and Barbara Brock. She is a 2006 graduate of Collins Hill High School and attended Gwinnett Technical College for business management. She is employed at Surgical Associates LLC.

The future groom is the grandson of Margy Xander of Duluth, Jane and Chet Womack of Hartwell, and William and Joy Galphin of Amelia Island, Fla. He is a 2005 graduate of Collins Hill High School and attended Georgia Perimeter College. He is employed at Hilti.

The wedding is planned for March 26 at the Atrium in Norcross.