Countess Albertine Agnes of Nassau

• Name — Countess Albertine Agnes of Nassau • House — Orange-Nassau • Father — Frederick Henry, Prince of Orange • Mother — Amalia of Solms-Braunfels • Issue — * Amalia, Hereditary Duchess of Saxe-Eisenach • Henry Casimir II, Prince of Nassau-Dietz • Wilhelmina Sophia Hedwig • Birthplace — The Hague • Died — 26 May 1696 • Place of death — Oranjewoud Palace • Burial Place — Grote or Jacobijnerkerk in Leeuwarden • Illustration — Albertine Agnes and her sisters • Illustration — Oranienstein Palace, Diez

Albertine Agnes was born in The Hague and was the sixth of nine children born to her parents. Some of her siblings died in childhood. Albertine and four other siblings lived to adulthood. Her surviving siblings were: William II, Prince of Orange, Luise Henriette of Nassau, Henriette Catherine of Nassau and Mary of Nassau. In 1652 she married her second-cousin, William Frederick, Prince of Nassau-Dietz.

After the death of her husband in 1664, she became regent for her son in Friesland, Groningen and Drenthe. In 1665, both England and the bishopric of Münster declared war on the Netherlands. Because most of the money for defence had been used for the fleet, the army had been neglected. When Groningen was under siege, Albertine Agnes hastened to the city to give moral support. Pressure by King Louis XIV of France, then an ally, forced the forces of her enemies retreated, but six years later the Netherlands were attacked from the south, by the French under Louis XIV and from the north by the bishop of Münster and archbishop of Cologne. She organised defence and kept morale high. In 1676 Albertine Agnes bought a country seat in Oranjewoud and named it the Palace of Oranjewoud. It was here that she died in 1696. She also had Schloss Oranienstein built from 1672 as her new residence at Diez.

She and William Frederick had three children: • Amalia of Nassau-Dietz (1655-1695), married to John William III, Duke of Saxe-Eisenach • Henry Casimir II, Count of Nassau-Dietz (1657-1696), married to Henriëtte Amalia of Anhalt-Dessau • Wilhelmina Sophia Hedwig (1664–1667)

Albertine Agnes's ancestors in three generations • Albertine Agnes of Nassau — Father: Frederick Henry, Prince of Orange — Paternal Grandfather: William the Silent — Paternal Great-grandfather: William I, Count of Nassau-Siegen • Paternal Great-grandmother: Juliana of Stolberg • Paternal Grandmother: Louise de Coligny — Paternal Great-grandfather: Gaspard de Coligny • Paternal Great-grandmother: Charlotte de Laval • Mother: Amalia of Solms-Braunfels — Maternal Grandfather: John Albert I, Count of Solms-Braunfels — Maternal Great-grandfather: Conrad, Count of Solms-Braunfels • Maternal Great-grandmother: Elisabeth of Nassau-Dillenburg • Maternal Grandmother: Agnes of Sayn-Wittgenstein — Maternal Great-grandfather: Louis I, Count of Sayn-Wittgenstein • Maternal Great-grandmother: Elisabeth of Solms-Laubach

The authorities additionally record the headings Emilie Albertine Agnes van Oranje-Nassau, Albertine Agnes of Nassau and Vorstin van Nassau-Dietz Albertina Agnes van Oranje. Her recorded language was Dutch.