He is probably the Godfrey Manchester who, on 6 March 1805, "conveyed a lot of land to Philip Gray, 3rd, as clerk of the Amicable Society of Tiverton." A meeting house was built on that land, near Tiverton Four Corners, to replace the older one on Lake Rd. The newer building burned in 1845, and was soon rebuilt, and was remodeled over the years. This is the church building that stands on Main Rd. in Tiverton today. (ref: "The History of Amicable Congregational Church 1746 - 1946")
On 10 Dec 1772 Godfrey Manchester of Tiverton bought land in Tiverton from John Manchester of Little Compton, grandson of John Manchester, deceased. As I see it, these two were brothers.