John Oliver researched the origin of Trump’s name and found that his great grandfather changed it from Drumpf to Trump when the old gentleman arrived on Ellis Island from Dusseldorf. Apparently, his great-grandfather made Lederhosen for parade goers during Oktoberfest. The pants maker studied law when he came to America. His first name was Isodore, or Uncle Izzy as he was affectionately called. But Izzy Drumpf wasn’t a very good lawyer, so he kept the tailor shop open while he was practicing law; therefore, you might say that Izzy Drumpf was fitting and fighting suits simultaneously.