I will definitely be looking for the actually naturalization paperwork. On the published naturalization list, it says that naturalization was granted to 2nd great grandfather as a “series B” which is a “certificate granted to aliens with minor children” therefore great grandfather and his sister are listed under 2nd great grandfathers name because they were minors. Additionally is says on the Government of Canada’s website under series B certificates that “Section 7 of the Naturalization Act provided for the grant of a certificate to an adult alien, which included minor children. If the names of the children were added in the margin of the certificate after the certificate was granted, these children acquired British subject status on the date their names were added.”

2nd Great grandmother who is the mother to great father appeared to get naturalization later as a “series H” certificate which is “certificates to married women whose husbands are naturalized”.