WE have two distinct Martin Families in the Cartwright area of Labrador, but neither seems to be connected to yours. Our Martins come from a James Martin (1809-1876) and an un-named Martin , probably William, of the same generation. They could be brothers. Either they, or their father(s) came from England to Labrador. They would be about the same age as the father of your Charles. The names, Charles, Joseph, and Frederick do not appear anywhere in either of the two Labrador Martin Families in the last 5 generations, so I suspect their is no connection.