Louis Agard and Louis Archambaualt who were 1st cousins from france traveled together to America and landed in South Dakota to help with translations for the Lakotas.
Louis Agard married Mary Spottedhorse and had many sons, one who was James Agard.
James Agard than had 7 sons: James Agard Jr Mosses Agard William Agard Harry Agard George Agard Daniel Agard Thomas Agard
James Agard Jr had 4 children: Dorothy Agard Delia Agard Bea Agard Lillian Agard
Mosses Agard had 3 children Edith Agard Dorothy Agard James Agard
I also looked up Louis Agard and this is what i found....
Louis Agard found in: U.S. Western and Prairie States - Census Index (1880) State: Dakota Territory County: Emmons Relationship to Head: Self Age: 48 Gender: Male Race: White Marital Status: Married Occupation: Stock Farmer Birthplace: FRANCE Birth Year: <1832> Mother Birthplace: FRANCE Father Birthplace: FRANCE Roll: T9_112 Page: 511A ED: 81