By Brigid Brown & Joseph Wilkes Meghan Markle has been so popular during her and Prince Harry’s visit to Nigeria that the Duchess of Sussex has been given a new two-word nickname, it seems. The pair were on a three-day Nigerian jaunt – dubbed a ‘mini Royal tour’ as the pair are no longer ‘working royals’ having stepped back from the Firm in 2020- to promote the Invictus Games. But Dr Pauline Maclaran from Royal Holloway University of London reckons the spotlight was firmly on the Duchess due to her heritage. Chatting with the Express, Dr Maclaran shared: “The visit seems to have gone exception…