On September 3, Frederick escapes to New York through borrowing papers from a free-black slave. He changes his last name to Johnson. On September 15, Frederick marries Anna Murray (free African-American housekeeper). Frederick and Anna move to New Bedford, Massachusetts to stay with caterers Nathan and Mary Johnson, where Frederick works as an unskilled laborer. Nathan Johnson suggests change his last name to ‘Douglas,’ a character from the poem, Lady of the Lake, written by Sir Walter Scott.