Hi Betty, Yes they're in the 1881 Census for Ottawa twice. Once temporarily in an orphanage, and again a few months later when they were sent home to the father.
Their father is William Cooper and the mother is Emma Morley (died in 1881). One census say they were all born in Ontario and another says the US.
I have been online searching for years trying to find the birth records in either Ontario and the US. but have failed to discover any.
Peace and love,