I just tried with a place of whose existence I only recently became aware of: Hörden, near Rastatt, Baden. GOV says "Hörden, Gaggenau, Rastatt, Karlsruhe, Baden-Württemberg, Bundesrepublik Deutschland", which is definitely wrong for the period with which I am working, 1750 to 1870.
<rant>From what I have been able to glean, it seems that up to 1771 Hörden was located in the Margraviate of Baden-Baden, 1771-1803 in the Margraviate of Baden, 1803 to 1806 in the Electorate of Baden, thence to 1918 in the Grand Duchy of Baden. The "Baden" entity belonged to the Holy Roman Empire until 1806, to the German Federation from 1815 to 1866 and to the German Empire from 1871 to 1918. Presumably the creation and dissolution of these bodies did not always fall on the first, resp. last, day of a calendar year, and there seem to be interregna (from 1806 to 1815 and 1866 to 1871). It is impossible for me to keep track of all this for a child who was born in 1799 and died at the age of 7 without reference to an extensive online data base.</rant>