In March 1907 there is a Nellie L Newman going to Canada on the 'Dominion' with a Dr Barnardos party of children
In March 1908 there is a Frances A Newman going to Canada on the 'Dominion' with a Dr Barnardos party of children.
In 1909 there is a George Newman going to Quebec 'to school' on the 'Sicilian' with a Church of England party.
Could these be the 'missing' children of the family? (from the 1901 census)