User blog:Robin Patterson/Jacinda Ardern genealogy

The world's youngest female national leader (and 13th-most-poerful female politician?) - New Zealand's new Prime Minister Jacinda Ardern has ancestry traceable back to at least the 12th century. We reproduce some of it here, combining compilations from other genealogy websites and reputable news companies. But her maternal ancestry is shadowy - can you help? Or can the DNA Detectives help?