A good post from Sean there. I'd suggest that there are a lot of white born Africans, for example in South Africa and Zimbabwe to some extent . . . . Oh, I just found a site which explains in detail

Where White Africans Live (African Countries with Highest Populations)
These are the countries with the highest populations of white Africans. It is sometimes forgotten that many white people stayed in Africa for hundred of years.

I'd say to Sean that being commonwealth and all, he, wife & child could all become Nigerian over time but the baby would certainly have dual nationality. They could be free to choose one or the other or both.
Does that make sense??
