All very well and good, but I thought it was just common sense that he was Northern Italian and from Genoa, per academic consensus and late medieval historiography? He only came to Spain and Portugal seeking a monarch who would care to fund his Atlantic voyage and crackpot theory about reaching East Asia quickly due to the size of the world being miscalculated (when in reality the ancient Greeks like Eratosthenes were remarkably accurate in determining the circumference of our planet).