I also research the Eckman name.
The 1850 Census for Seneca Co., Ohio has the following
Daniel Eckman, age 40, farmer, born Pa.
Catherine, wife, age 31, born Pa.
John, age 21, born Pa.
David, age 18, born Pa.
Magdalene, age 20, born Pa.
NEXT ENTRY on same page
John Dildine, age 47, farmer, born Pa.
Elizabeth, wife, age 51, born Pa.
James H., age 19, farmer, born Ohio
Daniel H., age 17, farmer, born Ohio
Samuel H., age 15, born Ohio
Nancy J., age 12, born Ohio
John H., age 9, born Iowa (hard to read, but 4 letters last being an a)
Wilson, age 6, born Ohio
The 1860 census has the following.
James Dildine, age 28, lawyer, born Ohio
Magdalene, wife, age 29, born Pa.
David, age 7, born Ohio
Susannah, age 4, born Iowa
Martha, age 1, born Iowa
The above is for Linton Twp., Allamakee County, Iowa