There may be someone in the Canadian community (Canada - OpenStreetMap Community Forum) who knows better than I, but I think that’s just the name of the family that lives there.
Often in rural Canada roads are signposted further up the crossroad rather than right at the intersection (the premise being a driver going 80-100 km/h might not be able to read a sign at the intersection quickly enough before whizzing past their intended turn), and almost always have white lettering on a green or blue background. I suspect that that “Gingrich Road” name was added with the best of intentions by the user krnchygravl on the presumption that this sign was indicating the road’s name.
1 Like