How can I prove sibling relationship if my brother is an illegitimate child?

[paulm0920]

We can provide a copy of his Canadian citizenship documents and his proof of Canadian address but my problem is that he has a different last name than mine because our mutual father was married to my mother, not his. I am not completely sure yet, but my father's name may not be on his birth certificate. How would we prove our sibling relationship in this case? Thank you to anyone who would attempt to answer this.

 

[Wolfpmd3]

We can provide a copy of his Canadian citizenship documents and his proof of Canadian address but my problem is that he has a different last name than mine because our mutual father was married to my mother, not his. I am not completely sure yet, but my father's name may not be on his birth certificate. How would we prove our sibling relationship in this case? Thank you to anyone who would attempt to answer this.

Unless you can provide proof, any of those mentioned below or something equivalent, you will not be able to claim these points. You should probably start by checking both of your birth certificates.

• Proof of the relationship of the applicant or the accompanying spouse or common-law partner to the family member must also be provided (e.g., a birth certificate, an official document naming the applicant as a relative, a copy of the inside back cover of the relative’s passport showing the relative’s parents’ marriage certificate, legal adoption documents and any other documents that prove or describe the relationship).
• If the applicant claims a stepbrother or stepsister, there should be no evidence in the application that the marriage or common-law relationship between the parents of the stepbrother or stepsister has broken down.