The Master Surname Index (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society lists 7 Morigeau names, but none that you list;
The AGS could send you these names or for further research please contact the AGS Research Services Committee of the Edmonton Branch,
http://abgensoc.ca/ The Edmonton Branch
http://agsedm.edmonton.ab.caThere is one listing for Morigeau here at Red Deer
http://findaperson.canada411.ca/Peter