Historic Homes and Institutions and Genealogical and Personal Memoirs of Worcester County, Massachusett by Ellery Bicknell Crane published by Lewis Pub., 1907
Samuel Dadmun, the immigrant ancestor of William Slocomb Dadmun, of Worcester, and probably of all of this surname in this section of the country, was said to be of Scotch birth and family. He was born about 1690, and the first record found in which his name is mentioned is that of his marriage at Framingham, Massachusetts, May 27, 1714, to
Martha Jennings, daughter of Stephen Jennings.
Her father came to Framingham in 1690, married at Sudbury, January 11, 1685, Hannah Stanhope; he died September 3, 1701, and Hannah, his widow, bought, January 6, 1702-03, of James Brewer and Caleb Johnson part of the Appleton farm lying between Lake Cochituate and Cochituate brook where her descendants lived until after the revolution. The place is known as the Luther Eaton place.
Martha (Jennings) Dadmun and her children were living there with her mother in 1718. Samuel probably died in 1717 or 1718. Their children were: Samuel, see forward, and a daughter who married Wadsworth. The name is spelled also Deadman and Dedman.