In marriage book 5 1850-1854 there were no Amsdens at all.
Bigger Twp 1860 census
Amsden, Caleb D. 44 merchant born in KY, Nancy 30 born in KY, Sarah A. 7 born
in KY (so the marriage probably was KEntucky), Jesse 5 b KY Wm 3 b KY Abner 1
born KY B. (a male) 36 merchant and also living with them James Wagner 30 laborer.
I would check the 1850 KY census for Amsden and then look marriage records for
that county for Caleb and Nancy.
In my 4 books that is the only reference to Amsden.