Dr. John F. Jennison was born at Walpole, in August, 1813, was educated in the public schools and at Cavendish academy, and studied medicine with Dr. Davis, in Norwich, Vt. He graduated at Norwich academy in 1838, and from Dartmouth college in 1842. He commenced practice in Swanzey, N. H., the same year, but moved to Keene in 1852. He married Elizabeth Ross, and died December 15, 1884. The widow still resides in Keene.