Charles H. Casper and Margaret LaFramboise

My great-great grandparents:
Charles Henry CASPER (born COSPER) was born on 06 Sept., 1855 in Wilmington Twp., DeKalb County, IN to Charles COSPER and Lucinda WEEKS and was the youngest of 11 children. He died in Bismarck, Burleigh County, ND on 25 December, 1933 of a heart attack as he walked the few blocks home from his son following a Christmas family get-together. He was married in 1884 to Margaret LaFRAMBOISE. Margaret was born illegitimate on 15 March, 1867 in Pembina area of Dakota Territory (ND), probably near St. Joseph to Metis (French-Indian) parents Marie LaFRAMBOISE...father unknown. She died on 14 Dec., 1920 in Bismarck