ND-Grand Forks        
Trepanier Bros. Grand Forks No. Dak.
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1900 Census: Charles P. Trepanier age: 54 born about 1856 in Canada.
Occupation: Druggist
Wife: Minnie L. Trepanier Age: 39
Son: Charles P. Trepanier Age: 18
Son: EDward O. Trepanier Age: 15
Son: William Trepanier Age: 14
Daughter: Mary E. Trepanier Age: 11
Son: Henry M. Trepanier Age: 10
Daughter: Catherine Trepanier Age: 7
Son: Paul Trepanier Age: 6
Son: Theodore Trepanier Age: 5

1920 Census:
Charles P. Trepanier age: 27 born about 1893 in North Dakota.
Occupation: Proprietor Drug Store
Wife: Anna Trepanier Age: 28
Son: Jack Trepanier Age: 5
Daughter: Jean A. Trepanier Age: 3