Cuba
The largest Caribbean island, which Columbus named Juana in 1492.
Today: Cuba
News of the First Voyage
Christopher Columbus, letter to Luis de Santángel, February 1493 (opening) · dated February 15, 1493 (events of October 1492 onward)
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A la segunda puse nombre la isla de Santa María de Concepcion: á la tercera Fernandina: á la cuarta la Isabela: á la quinta isla Juana, é así á cada una nombre nuevo.
The second I named the island of Santa María de Concepción, the third Fernandina, the fourth Isabela, and the fifth Juana. And so I gave each one a new name.