Manchester, NH: Derek T. Castonguay, 50, of Manchester and formerly of Lawrence, MA, died Friday evening, September 2, 2022.

Born and raised in Lawrence, son of Robert R. Castonguay and Jean M. "Jeannie" (Zanfagna) Castonguay, he attended Lawrence Public Schools and Northern Essex Community College.

Derek was the owner and operator of Agape Media Solutions, a sales and technical consulting company in Manchester. Devoted to his family, he was a loving and supportive son, brother, and fiance', and was generous with his time and resources, helping the less fortunate people that he came in contact with throughout his life. An accomplished guitarist and singer, he also enjoyed fishing, hiking, camping, trips to the mountains, and was devoted to his dog "Riley".

He will be sadly missed and lovingly remembered by his mother, Jean "Jeannie" (Zanfagna) Castonguay of Methuen, his father Robert R. Castonguay of Derry, NH, his sister Army Command Sergeant Major Raquelle Castonguay and her husband Adam Steidinger of Salt Lake City Utah, his fiancee' and love of his life, Dianne Rubino of Manchester, his aunts, Joyce Jordan and her partner Jan Ethier of Salem, NH, and Janice Gaudet and her husband William of Methuen, and their children, Jen, Michelle and Kim as well as several cousins, especially Joshua Jordan, his wife Tabitha and their children, Seth and Samantha, and many friends and extended family.

Relatives and friends are invited to Derek's Life Celebration to be held on Sunday, September 11, 2022 from 1 to 3 p.m. at Brookside Chapel & Funeral Home, 116 Main Street, Plaistow, NH. His funeral service will follow at 3:30 p.m. in the funeral home. To send a message of condolence to the family or to share a cherished memory, please visit: www.brooksidechapelfh.com .