Robert A. Johnston and Laura B. Johnston of Oak Bluffs are proud to announce the engagement of their son Andrew B. Johnston to Brianna Valenti, who is the daughter of Peter J. and Patricia J. Valenti of Edgartown. The wedding is planned for July 7, 2014, to be held on a beach on the Vineyard. Drew and Brie graduated from the Martha’s Vineyard Regional High School and are living in Monson. Brie’s daughter, Lilly, is an extraordinary and charming little girl who just recently turned six. They make a wonderful family and everyone is very happy for them.