The actual relationship, based on descent from Jacob Vanderhoof and Ann Hopler, is fourth cousins, once removed.
We can't see the shared segments at AncestryDNA, but these cousins fortunately uploaded to GedMatch.
My father shares five segments with one of the cousins, which is a great lead.
The amount and location of shared DNA among the other relatives varies.
We can triangulate the relation using the DNA of my father's brothers and their third cousin. All three match this AncestryDNA cousin on chromosome 12. (This segment immediately follows the segment shared by the DNA cousins from yesterday's post.) The branch of my father's tree common to him and his third cousin holds Jacob Vanderhoof and Ann Hopler, the predicted Most Recent Common Ancestors.