Appears to have changed his name from PEARSON to BROUILLARD sometime before marriage, but see Research Notes. [1468, Beltrami Co. # N/399]
Research
1940 census has a Harold BROUILLARD born 1924 living in Bemidji, Beltrami Co., Minnesota, with parents Paul & Bernice Brouillard. https://familysearch.org/pal:/MM9.1.1/KSVH-KGD This only adds to the confusion over his birth name. Was unable to find a good match in 1930 for a Harold PEARSON. But there is a listing in Bemidji for him in 1930 with the same parents noted above: https://familysearch.org/pal:/MM9.1.1/X3CP-4MK Maybe the PEARSON name is an error on mnhs.org