For quite a while I have been impressed with the story that Christopher Columbus and his crew sang the Salve Regina at sunset. Today (celebrating him on a Monday), I came across this lengthy article about Columbus's devotion to Mary as shown in the names of ships and places. The author is a Marianist Brother at the University of Dayton.
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Please note that Guadalupe is first of all a place in Extremadura, Spain. The name was brought to Mexico.