Alfred Vellucci
An Italian American, Vellucci was opposed to the idea that Leif Ericcson, rather than Christopher Columbus, discovered America. After a group of scholars from Harvard promoted the claim that Ericcson discovered America, he proposed a motion to the Cambridge City Council that officially renamed Harvard Square to Columbus Square. He also planted a large tree in front of the Harvard Lampoon Building, claiming that it was an eyesore and arguing that the "Harvard Lampoon" had insulted Italian Americans by claiming that the Irish discovered America. He feuded with the "Harvard Lampoon" for years. The paper often satirized him, one issue running an Alfred E. Neuman style picture of him on its cover. On one occasion, he unsuccessfully proposed a city ordinance declaring their headquarters a public urinal.
Alonso Sánchez
After the discovery of America several rumors started to spread especially among the conquistadores, claiming that America had not been discovered by Columbus, but that its existence was known at least 20 years before 1492. Bartolomé de las Casas had indeed heard several of those claims, but limited himself to record them.