<Tr> <Th> 7 </Th> <Td> </Td> <Td> <P> Juan Ponce de León (3rd time) </P> </Td> <Td> 1515 </Td> <Td> 1519 </Td> <Td> </Td> </Tr> <P> Juan Ponce de León (3rd time) </P> <Tr> <Th> 8 </Th> <Td> </Td> <Td> Sánchez Velázquez </Td> <Td> 1519 </Td> <Td> 1519 </Td> <Td> </Td> </Tr> <Tr> <Th> 9 </Th> <Td> </Td> <Td> Antonio de la Gama </Td> <Td> 1519 </Td> <Td> 1521 </Td> <Td> </Td> </Tr>

Who was the first elected governor of puerto rico in 1947