Juana Maria
Most of her tribe was killed in massacres, which took place in 1814. In 1835, most of the remaining tribe was brought to the mainland, where they died of different diseases. Since then, Juana Maria was probably the only person to live on the island. She was found and brought to the mainland, in 1853. At that time, no one could understand her language any more, and people could only communicate with her using hand signs.  Today, only a few isolate words and two songs are known of the language.