Joseph Donald Silva 1935 – 2021 Service Announcement PORTSMOUTH, N.H. -Joseph Donald Silva, Professor Emeritus UNH and former pastor, died on Oct. 19, 2021 at Portsmouth, N.H. A memorial service will be held on Saturday, June 18 at 1 p.m. in the New Castle Congregational Church, 65 Main St., New Castle, N.H., followed by a reception.