In the 1860 census for Fremont Co. IA, Ross Twp. p. 855, there is the family of: Isaac DILS 85/PA(farmer) Mary"65/PA Hester "34/IN Mason"24/IN
This indicates the family was in Indiana c1826 and c1836. The one Isaac I've found in Indiana in that period was in the census for Fayette Co. IN in 1820 and 1830.
As Isaac looks to have been b. in PA c1785, he may be related to the Henry Dills (1785 & 1788)/Dilts(1786) who owned property and was reportedly an innkeeper in Northampton Co. PA.The 1793 list for Northampton Co. PA has no Henry, but does have 2 Isaacs.
This data came from someone else's research, so I don't know how accurate it is. Northampton Co. PA is on the border of Warren Co. NJ.