Greg, this was on the Clinton Co., NY forum back in 2001:
My Peter Jennett real name was Peter Jason. He married Melissa Parrish under that name. The rest of his brothers and sisters were called Jason. His father was Francis Jason and his Mother was Rose ???.
I have interesting facts regarding his marriage and Civil War Army Service.
Also, I found Melissa Jennett in 1880 in Clinton Co. with daughter Sarah, age 17 (born 1862 or 63).