"Amalia of Solms-Braunfels (31 August 1602, Braunfels – 8 September 1675, The Hague), was Princess consort of Orange by marriage to Frederick Henry, Prince of Orange. ...
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She acted as the political adviser of her spouse during his reign, and acted as his de facto deputy and regent during his infirmity from 1640–47. She also served as chair of the regency council during the minority of her grandson William III, Prince of Orange from 1650 until 1672. She was the daughter of count John Albert I of Solms-Braunfels and countess Agnes of Sayn-Wittgenstein." - (en.wikipedia.org 05.02.2020)
