From "HISTORY OF THE UPPER OHIO VALLEY,"  Vol. I, pages 719-720.
Brant & Fuller, 1890. 

JOHN B. MARTIN

John B. Martin, a prominent farmer near Rosby's Rock, Marshall 
county, was born August 5, 1842, a son of Squire D. Martin.  The 
latter died in when John B. was twenty-five years of age and he then 
took charge of affairs upon the farm.  At the age of twenty-eight, 
December 15, 1870, he was married to Amanda J. Terrill, daughter of 
Sherman and Amanda (Potter) Terrill, the former of whom died by 
accidental injury, in 1858, at the age of forty-nine years.  Mrs. 
Martin's parents had eight children:  Elizabeth, William, Mary A., 
John A., Rachel J., Sarah M., Amanda J., and Andrew S.  The mother is 
living in Hancock county, Ill.  Mr. and Mrs. Martin have two 
children, Cora V. and Charles T.  Mr. Martin has been very 
industrious and successful in the management of his farm, and is 
classed among the substantial citizens of the region.  He gives to 
politics but little attention but supports the democratic party.  His 
wife and children are members of the Methodist Episcopal church.

(Linda Fluarty)