More than 387 census records are available for the Miller family, from both 1901 and 1911.
Sample 1901 Welland census records about the Miller family available from Ancestry.ca:
A Miller family household of at least 6 members residing in the district of Welland was recorded in 1901. The head of household, Henry J Miller, was born in Ontario in 1862. He identified his heritage as German. By 1901, at the age of 38, he had an occupation that was recorded as "Farmer". Henry's wife was Esthy Miller, who was 41 years old. Esthy was born in Ontario in 1859. She also identified her heritage as German. Henry and Esthy had 4 children, 2 boys and 2 girls. In 1892 their eldest child, a girl named Beatrice, was born. That same year1892, when Henry was 30 years old and Esthy was 33 years old their second daughter, who was named Mabel, was born. Then, in 1895, with their two older daughters ages 3 years and 3 years, their third child, Frederick, was born. In 1901 another son, their fourth child and second boy, Arden, was born. Thus, at the time of the 1901 census, this Miller family household was filled with 4 children whose ages were 1, 5, 9, and 9 years.