The Oldest Christian Dynasty: Georgian Monarchs Family Tree, 299-234 BC to present day
Narration by Jack Rackam
Chart by Ramiro Sottosanto
Animation by Syawish Rehman
This genealogy-related mini documentary on the Royal House of Georgia was just posted today at the UsefulCharts YouTube channel. The House Bagration is now also part of the Imperial House of Russia and to this day the opposition to Grand Duchess Maria Vladimirovna state her mother, a Bagration princess, was a morganatic marriage with her father Grand Ducke Vladimir of Russia.
In my opinion that is absolute nonsense and just because Georgia and Armenia were absorbed into the Russian aristocracy ranks doesn't remove the history that House Bagration was reigning longer than any current royal house in Europe. It's a very similar situation to the royal house of Hawaii absorbed into the USA republic.
So that makes Maria, her son and grandson the most senior of all royal houses in both Europe and Middle East dynasties.