Looking for Martin Smith Harrison OR Floyd County Indiana

Hi,

I am seeking information on a Sarah Caroline Martin she was born Apr 5 1850 in Indiana she married a William L. Smith he was born June 5 1841 and died Aug 7 1933 they were married Sept 14 1871 they have 3 children I know of Roerta Smith born abt 1872 Nellie Smith born abt 1874 Mabil/Mable born abt 1877, I found them in the 1880 census Morgan Twp Harrison County, Indiana but after that I can't find any of them Sarah was the daughter of Madison Martin and Nancy Byerly any information anyone can add to them or there family, would be greatly appreciated. This is all the information I have pretaining to Sarah Caroline and her husband William Smith.

Erica