More than 9 census records are available for the McDermaid family, from both 1901 and 1911.
Sample 1901 Cape Breton census records about the McDermaid family available from Ancestry.ca:
A McDermaid family household of at least 4 members residing in the district of Cape Breton was recorded in 1901. The head of household, John A McDermaid, was born in Nova Scotia in 1859. He identified his heritage as Scotch. By 1901, at the age of 41, he had an occupation that was recorded as "Hotel-keeper". John's wife was Flora McDermaid, who was 34 years old. Flora was born in Nova Scotia in 1866. She also identified her heritage as Scotch. John and Flora had 2 children, both girls. In 1892 the older girl, Catherine, was born. Three years later, in 1895, when John was 36 years old and Flora was 29 years old their second daughter, who was named Ermma, was born.