Hi Bobbi. The only information I have on Johnathan C. Steffy is the marraige certificate on his daughter Blanche Steffy to Benjamin Yount in 1917. She was 17 yrs old at the date of her marriage. Therefore I figure Johnathan had to be at least 20 or so when Blanche was born(?). If so that would put him in the vicinity of the late 1880's when he was born. At the time of his daughters marriage they had been living in Garretts Run in Armstrong County Pa. He was married to Christina Stoops. This is all I have to go by. If you can offer any info, please write back.