I'm passing along this info in the hope someone else is looking for Wm. Greenough.My source is History of Newburyport, p. 121. Wm. Greenough was the Right Worshipful Wm. Greenough, master of St. Peter's Lodge in Newburyport and was intending to celebrate the Feast of St. John the Evangalist on the 27th of Dec. (1776) at the Merrimack Coffee House in Newbury.He had 2 sons - Carpenter and William.Can anyone else add to this?