According to "Genealogy of John Rockwell, of Stamford, Connecticut, 1641..." by James Boughton, John Rockwell is listed as the child of John and Elizabeth (Weed) Rockwell, of Stamford, Conn:
"1. John Rockwell, Jr. - Of the date and place of his birth, or when or to whom married, no reliable information could be obtained by the compiler; his death probably occurred at Stamford about 1673, as his inventory was presented there March 10, 1673-4."