Yes, he was only pretending to be descended from Dutch patroonists; really they were Sephardic Jooos! who fled Spain, settled in Amsterdam, and from there came to the New World. The polio thing was all an act as well. His cousin TR was Jewish, too. Out of 44 POTUSes, two of them were Jewish, thereby proving that Jews are the real power in the US. Only one or two percent of the population, and they’re more than four percent of the presidents. That’s disproportionate! Abraham Lincoln was Jewish, too.
Don’t know about TR, but I’ve seen the same nutballs make the accusation about GWB, based on the Bush family of Philadelphia. Pop helped with financing, I believe 4 boys served in the Continental Army. One killed, one a LtCol, the highest ranking Jew amongst the Continentals.