Clearly there are more than one Stephen March. Although you do not give the dates for your grandfather, I have a Stephen March of Old Perlican who is my 4th great grandfather. He was b. about 1734 based on his reported age at death, and he died in New Perlican 9th January 1812. All I know about him is that he had a daughter, Ann March, who married Stephen Knight probably on 21 July 1793. Their daughter, Ann March Knight, was b. 25 December 1799 and in 1819 married Cam Gyde Heaven of England, and moved to England. It has been suggested that she may have previously married a John Higgins. However, the names Ann, March, and Knight, in various combinations, are so common in New Perlican that it is not certain that the person who married John Higgins is the same person as the one who married Cam Gyde Heave.