(Cir 1826-After 1880)
This Eliza is probably a 2nd marriage for Isaac. The 1850 census records his 1st wife as Elizabeth and she is 3 years older than Isaac and from Ohio. The 1860 census shows no wife ... see notes on Emma C. Johnson.
Eliza married Isaac Johnson. (Isaac Johnson was born circa 1820 in Pennsylvania and died after 1880 in Urbana, Champaign Co., Ohio.)