I think Louis would be nice, I know there were rather a lot of them in the French royal family and that didn't end well. It's a shame that there appears to be a small pool of names the royal family seem obliged to opt for. In Denmark it's worse, going round one of the castles in Copenhagen last year, there was a list of their kings, that went, if I remember rightly, Christian, Frederic, Christian, Frederic, Christian, Frederic, with maybe a Frederic, Frederic, Christian, Christian but those were the two! Maybe David or Michael for middle names or even Stephen, we had a King Stephen back in 11 something or other, but there was never another one. Louis, David, Michael with a Danish Christian on the end.