I wonder how many of the citizens of the German town of Delmenhorst know that their mayor, Patrick de la Lanne is a descendant of the Kings of Württemberg. His mother is Duchess Margarethe of Württemberg, eldest daughter and second child of Duke Albrecht of Württemberg and Princess Nadejda of Bulgaria.
Margarethe was born in 1928. She married at Althausen in 1970 to a French Vicomte Francois Luce de Chevigny. The couple have no children.
However, Margarethe is the mother of a son by a Scotsman, Robin Ian Evelyn Grinnell-Milne, who was born in 1925. In 1952, Robin changed his surname to Milne Stuart de la Lanne-Mirlees. Six years later, he abandoned this surname by deed poll, and adopting a new surname Milne Stuart le Comte de la Lanne-Mirrles. In 1992, he changed his name by Deed Poll to Milne Stuart le Prince de la Lanne-Mirrlees.
Patrick Francis de la Lanne was born in San Francisco in 1962.
Patrick's daughter Marie-Charlotte has taken part in a model UN - and using the surname de la Lanne-Mirrlees.
As far as I know, Patrick Francis de la Lanne-Mirrlees has never talked about his royal connections. His mother is a first cousin to King Simeon of Bulgaria. It is even possible that the Mayor de la Lanne, who is a member of the SPD party (Socialist), has limited contact with his mother's family.
He was raised by a foster mother, Charlotte Zaubzer in Oldenburg. She died in 2007.
I also do not think that Margarethe, now 80, has ever been seen in public with her son. Imagine the shame for a good Catholic girl from an aristocratic family who finds herself pregnant in the early 1960s - and goes off to San Francisco, California, to give birth.
As you can seen from the comments, Patrick was raised by a foster family, and not by his mother. He was not twin ... there is an error in the birth registration as Patrick is listed twice in the California Births Index: as Patrick Francis and Francis Patrick. One in the same.