 The Taíno settlement was located on the shores of what is called now the Humacao River.It is believed that the Taíno chief Jumacao was the first "cacique" to learn to read and write in Spanish, since he wrote a letter to the King of Spain Charles I complaining about how the Governor of the island wasn't complying with their peace agreement.In the letter, Jumacao argued that their people were virtually prisoners of Spain.