Hi Kim, I know this email comes much later than your question was posted but I have much information for you if you are still interested? The book Captain Mcneill's Nishga wife was pretty much complete fiction with the exception of obviously recorded material. Mathilda married Robert Jesse (This was Mathilda and the Captains daughter). I speak to some of Jesse's relations and I am descended from Alfred Mcneill which is Mathilda's brother. You won't find birth records however there are baptismal records galore. The original church is in Victoria (not sure where you live), and is a beautiful place. Your relation has records of Jesse and could offer much help!! You can contact me through email@example.com (its easier to get a hold of me).