According to "Annals of Tazewell County Virginia, 1800-1922" by J.N. Harman: Henry and John Yost immigrated to Pennsylvania from Germany prior to the Revolutionary War. John, Jr. was born in 1769 and died in Tazewell County in 1886 at the age of 97. This book lists the following children: Lorenzo, John III, and David G. Hope this helps. Do have a marriage performed by John Perry in 1839 - John married Elizabeth Stump. Not sure which John this was. Happy Hunting! Sheila