"I don't think anyone in England would give a toss if the forthcoming sprog is named James, Alexander or Robert. Why would we?"

we'll have to agree to differ there. Something that'll never come up anyway as I suspect there is no way that the baby would be called Alexander or Robert etc. Much more likely to at some point have a Henry IX than a James VIII. History since 1707 suggests that! Now how about Macbeth II? That's be a good one. Or Lulach II :-)