Simplify the following text for a Grade 9 native English-speaking person.
Original: The most famous resident of San Nicolas Island was the `` Lone Woman of San Nicolas Island '' , christened Juana Maria ; her birth name was never known to anyone on the mainland .
Simplified: The most famous person from San Nicolas Island was the `` Lone Woman of San Nicolas Island '' , called Juana Maria ; her real name was never known to anyone .