I have your Marie Cecelia Hamelin (married to Pierre Paul) in my genealogy also. I have her as Cecelia, born about 1833 (probably in St Paul) and marrying Pierre Paul 10/25/1852 in Little Canada (borders on St Paul). Her parents were Louis Hamelin and Cecile Beaupre.
One record I found stated:
Genealogy of the First Metis Nation - Genealogies of Red River Households 1818-1870
Louis HamelinMetis, roman Catholic born NW Territory (British North America west of Lake Superior
wife Cicile Bruyere, Metis born 1814
One record states Louis was born 1809, the 1850 Minnesota census says he was 49.
Cecile died before 1852 (according to church records I have viewed)
Cecile was #2 in a family of 7: Ididore (born 1832 in St Paul)--my wife's relation Cecile Louis about 1836 in St Paul Gustave 1837 St Paul Victorie 1840 St Paul Irasine 1843