Casas, Bartolomé de las
Casas was convinced of the reality of Atlantis, having being strongly influenced by Marsilio Ficino‘s commentary on Plato’s Atlantis narrative.
He also claimed that Columbus had been inspired by Plato’s story of Atlantis. However, S. P. Kershaw[1410.163] quoting from B. Keen notes that Columbus’ son, Ferdinand ”explicity stated that his father never showed any interest in Plato’s tale.”
Bartolomé himself saw America as Atlantis and in his History of the Indies (Historia de Las Indias) begun in 1527, he drew up a list of parallels to support his contention.