Avila Duclos was born May 17, 1875, in Michigan.

The 1875 Minnesota census showed Odilon Duclos (age 0, born in Michigan) living with his parents Odilon (age 30, born in Canada) and Frazie (age 23, born in Canada) in Belle Prairie Township, Morrison County, Minnesota. His other siblings were Adalia (age 5, born in Minnesota), Zephir (age 3, born in Minnesota), and Addie (age 1, born in Minnesota).

The 1885 Minnesota census showed Abila Duclos (age 9, born in Minnesota) living with his parents O. (age 40, born in Canada) and Florie (age 33, born in Canada) in Pike Creek Township, Morrison County, Minnesota. His other siblings were Edith (age 15, born in Minnesota), Suprien (age 13, born in Minnesota), Ida (age 11, born in Minnesota), Clariea (age 7, born in Minnesota), Arsine (age 5, born in Minnesota), Lina (age 3, born in Minnesota), and Oscar (age 1, born in Minnesota).

The 1900 United States census showed Avila Duclos (age 25, born in May 1875 in Michigan, brick burner) married to Caroline (age 24, born in September 1875 in Canada) and living in Pike Creek, Morrison County, Minnesota. A son, Regis (age 5 months, born in December 1900 in Minnesota), also lived with the couple.

The 1910 United States census showed Avila Duclos (age 34, born in Michigan, pipe maker) married to Caroline (age 33, born in Canada) and living in Seattle, Washington. Children Regis (age 10, born in Minnesota), Roger (age 9, born in Minnesota), Marcel (age 5, born in Minnesota), Leon (age 3, born in Washington), and Lucile (age 5 months, born in Washington) also lived with the couple.

Avila Duclos registered for the World War I draft on September 12, 1918, in Seattle, Washington. His nearest relative was Caroline and his occupation was reveting.

The 1920 United States census showed Avila Duclos (age 44, born in Michigan, riveter shipyard) married to Caroline (age 43, born in Canada) and living in Seattle, Washington. Children Marcel (age 15, born in Minnesota), Leon (age 13, born in Washington), and Lucile (age 10, born in Washington), and Clovis (age 7, born in Washington) also lived with the couple.

The 1930 United States census showed Avila Duclos (age 54, born in Michigan, proprietor confectionery) married to Caroline (age 53, born in Canada) and living in Long Beach, California. A son, Clovis (age 18, born in Washington), also lived with the couple.

Avila Duclos died August 27, 1945, in Fresno, California.