I think they might go for something a little less “royal” too. Hopefully they’ll stay away from the Arthur, Albert type names a bit.
Philip could be in there somewhere, especially as it could well be the last great grandchild he meets (not being morbid, just realistic). Apart from William & Kate who were obviously naming a future king & his siblings the other royal grandchildren have all just picked the names they like haven’t they?
I’ll put 50p on Quentin Philip.