Wath Chomtai prevouisly name Wath Tai Gnai ( Khoum Thong ) most knowing populor name as What Thong Tai Gnai. Before 1955 wath tai was large disrtict (khoum), they divided to be 3 districts in early 1955 as : Wath Tai Gnai, Wath Tai Noi and Dong Nasok. Wath Tai Gnai ( Tai Gnai Temple ) is in Wath tai gnai district, Wath Tai Noi ( Tai Noi Temple ) is in Wath Tai noi district and Wath Chom Tai ( Chom Tai Temple ) is in Dong Nasok district.
They changed Wath Thong Tai Gnai to Wath Chom tai right after they divided ( Khoum wath tai ) to 3 ( Khoum ) in early 1955.
According to Wath tai History. By Phra archarn Bounmy Wattanavongso 1960. Ong Teu Library.