Jefferson is born as the younger son and the youngest child of German Count Friedrich-August Rüdiger Albrecht von Pfeil und Klein-Ellguth (b.
By birth he is a member of an ancient House of Pfeil und Klein-Ellguth, which can trace their noble ancestry back to the beginning of the 12th century.
The couple were married in Graasten Palace Chapel, a part of the Danish royal family's summer residence in southern Jutland.
According to an article in the Copenhagen Post, Princess Alexandra was granted Danish citizenship just prior to her marriage.
[4] The couple resided in Paris, where Count Jefferson was a managing director of the Swiss bank Sal.