Location of Kallstadt, Rhineland-Palatinate, Germany (Click to enlarge). Trump’s grandmother was pregnant with his father when they moved permanently back to the United States. His father’s first language is German, according to his niece. His mother’s first language is Scots Gaelic, as is well documented: https://miningawareness.wordpress.com/2020/07/16/donald-trumps-mother-was-a-gaelic-speaking-scots-mary-trump-shockingly-calls-her-anglo-saxon/
Both the Trumps and the Heinz families, of Heinz Ketchup fame, are from Kallstadt. They have also intermarried. Here is the trailer for a documentary on the topic.
“Kings of Kallstadt (2016)- Official Trailer”
Below is the original documentary in German. If you have studied at least a little bit of German and know something about the Trumps then you should understand most of it. If you want it in English then you will need to rent or purchase it. It features one of Trump’s American first cousins, who died shortly after filming.
“2014 Kings von Kallstadt Mein Dorf, Ketchup und der König von NY
Map license: https://www.openstreetmap.org/copyright