Princess Viggo, Countess of Rosenborg (née Eleanor Margaret Green) was born on November 5, 1895 in New York City. She was the daughter of Dr. James Oliver Green and Amelia Hewitt Green. Her mother was daughter of Abram S. Hewitt and the granddaughter of Peter Cooper. She married Prince Viggo of Denmark, Viggo Christian Adolph George, son of Prince Valdemar of Denmark and Marie Amélie Françoise Hélène d'Orléans, Princesse d'Orléans, on June 10, 1924 at New York City, New York, U.S.A. She died on July 3, 1966 at age 70 at Copenhagen, Denmark.
Without the legally required permission of the Danish king for a dynastic marriage, Prince Viggo renounced his place in Denmark's line of succession to the Crown, his title of Prince of Denmark, and his style of Royal Highness as became customary in the Danish royal house upon marriage to a commoner. Prior to the wedding Viggo with the king's authorisation, he assumed the title of His Highness Prince Viggo, Count of Rosenborg.
In connection with the marriage and his husband new title Eleanor Margaret Green became Her Highness Princess Viggo, Countess of Rosenborg. Prince and Princess Viggo had no children.
- Miss Eleanor Margaret Green (1895 - 1924)
- Her Highness Princess Viggo, Countess of Rosenborg (1924 - death)