Or how about Pitcairn island. It is still under British control and with only 43-50 inhabitants they need some new blood to mix with the Bounty mutineers and their Tahitian wives and Fletcher Christian. It would be a fitting place for the two sub-royals.
By the time Markle is done manipulating Harry, gaslighting him and completely turning him against his family, he will be completely off his rocker. I feel for Archie. Sure he'll have more $ then he could ever spend, but he has a mother that took him away from his Royal family and a father who's not playing with a full deck.
Even when Archie gets older, his parents will have completely turned him against the rest of his family and I doubt he'll have any desire to reconnect with them. Very sad.