Jacob Riffle was born in Germany about 1725 and died in Lewis County VA in 1816. He arrived at the port of Philadelphia, PA aboard the ship "Phoenix", John Mason commanding, August 28, 1750.
Settlement of Jacob's estate was recorded November 2, 1816 in Lewis County VA Will Book #1, pages 2-4. He married Dorothy ------ in Harrison County VA about 1768. Dorothy was born about 1745 and died in Braxton County in 1817.
Jacob and his brother Francis were some of the earliest settlers in present day Randolph County WV. Francis was killed by Indians about 1783 and Jacob and his family moved to Braxton County VA after 1816.
http://hackerscreek.com/norman/RIFFLE/JACOB.htm