Biographical Sketch of Asa Ryder Leave a Comment / New Hampshire / May 14, 2011 Last Updated on August 27, 2012 by ASA RYDER, son of Jotham Ryder, studied medicine with Alexander Boyd, of Newport, graduated at the medical department at Hanover, and settled at Alstead, N. H., where, after two years of practice, he died. Surnames:Ryder, Topics:Biography, Locations:Croydon New Hampshire, Sullivan County NH,Collection:Partridge, Dennis N. Croydon New Hampshire Genealogy.