Kentucky: A History of the State, Battle, Perrin, & Kniffin, 2nd ed., 1885,
Muhlenberg Co.

DR. W. H. YOST, one of the leading physicians of Greenville, Muhlenburgh
[sic] County, Ky., was born July 5, 1821, in Logan County, Ky.  He is the 
third of five children born to Jacob and Matilda (Johnson) Yost, natives 
of Virginia.  Jacob Yost was a son of Henry Yost, who married Miss Douthit.  
He was born and reared in Germany; was a gunsmith and made guns for the 
Revolution.  Subject's mother was a daughter of William Johnson, a farmer.  
Dr. Yost was reared on a farm and received a good education; in January, 
1845, he married Mary J. Brank, of Muhlenburgh County, Ky., daughter of 
Ephraim and Mary (Campbell) Brank, natives respectively of Garrard and 
Muhlenburgh Counties, Ky.  The doctor had born to him by this union five 
children, three of whom lived to be grown: Mary M., wife of T. J. Slaton; 
William H. and Ephraim B. (practicing medicine at St. Louis).  Mrs. Yost 
died August, 1862, a member of the Presbyterian Church.  Dr. Yost next 
married Tabitha Brank, sister of his first wife, who died in October, 
1877.  Dr. Yost is a Mason and a member of the Presbyterian Church.  He 
cast his first presidential vote for Henry Clay in 1844; since the war 
he has voted the Democratic ticket.

Yost Johnson Douthit Brank Campbell Slaton
=
Logan VA Germany Garrard MO

http://www.rootsweb.com/~kygenweb/kybiog/muhlenberg/yost.wh2.txt