Thổ Hoàng
Thổ Hoàng lies beside the lower Ngàn Sâu River in the inland country of Hà Tĩnh. The river bends through the hills before joining the Ngàn Phố to form the La. Local church history records that Ngô Xuân Hiền founded the village of Vạn Đò here in 1654; Dominican missionaries arrived in 1669, and a first church was built in the village in 1677, later bearing the name Thổ Hoàng.