Hi LCW
When I was reading through a few of the manuals on the cic website - they did say that if there are any questions about the bioligical parents, testing would be required.
I can't imagine that they would accept a notarized letter... or moreover that someone who is able to notarize would agree to it.... simply because they can't attest to something that they don't know is true. Just because the father and the mother say it's true - doesn't make it so.
So - although in your case it is truth ... imagine if everyone could just notarize a letter stating the bioloigical fater is who they say it is.
I think getting the blood work done is likely the way to go. I've pulled some information below for you ... hope this helps...
From the cic.gc.ca website below - go to the following link for the full manual: www.cic.gc.ca/english//resources/manuals/cp/cp03-eng.pdf
"Circumstances in which DNA testing should be carried out
DNA testing is used for verifying a relationship of parentage. In cases where there are doubts
concerning the authenticity of a parent-child relationship after documentary evidence is
examined, or when it is absolutely impossible to obtain it, applicants may be informed that the
results of a DNA analysis carried out by a laboratory accredited by the SCC are a satisfactory
substitute for documentary evidence.
Applications for proof of citizenship under 3(1)(b) of the Citizenship Act (the Act) and applications
for a grant of citizenship under 5(2)(a) of the Act may, for example, prove to be cases where
documentary evidence is unsatisfactory or unavailable.
