Leibniz

Gottfried Wilhelm Leibniz, born in Leipzig, was undeniably a big deal. His resume reads like a list of every intellectual pursuit known to man: philosopher, mathematician, logician, physicist, diplomat, librarian. He essentially invented calculus (simultaneously with Isaac Newton, leading to one of history's most entertaining academic squabbles), conceived the binary system, and even pondered universal languages. Basically, he was operating on a different plane of existence than the rest of us.

He was also a deeply religious Lutheran, spending a good portion of his life attempting to reconcile faith and reason, and even trying to reunite Protestant and Catholic churches. This, coupled with his distinctly German lineage, puts him squarely in the "Not a Jew" column, not that he ever claimed otherwise.

So, while his intellectual contributions were immeasurable, from the concept of kinetic energy to the very first mechanical calculator, none of them can be attributed to a secret bagel recipe or a particularly intense bar mitzvah. He did, however, demonstrate an impressive capacity for kvell-worthiness, just not the kind that involves a rabbi. His legacy is one of pure, unadulterated, gentile genius.