Margareta Gyllenstierna

Margareta Gyllenstierna af Fogelvik (c. 1689 - 26 January 1740), was a politically active Swedish countess, married to Arvid Horn, the President of the Privy Council Chancellery (1710–1719 and 1720–1738) and one of the leading figures of the Swedish Age of Liberty.

Being the only child so survive to adulthood, she was the heiress of great estates in Småland and Östergötland.

During the 1720s and 1730s, Margareta Gyllenstierna and Arvid Horn played a similar role as Magdalena Stenbock and Bengt Gabrielsson Oxenstierna in the 1680s and 1690s, and Christina Piper and Carl Piper in the 1700s: that of a married couple acting as political colleagues.

[1] Gyllestierna was among the influential political spouses who collaborated with the French ambassador Charles Louis de Biaudos de Casteja, who was known to engage female agents in Sweden for France, such as Charlotta von Liewen and Hedvig Catharina Lillie.

[4] Margareta Gyllenstierna maintained a political correspondence with the queen of France, Marie Leszczyńska, and the former Polish queen, Catherine Opalińska, both of whom were known as acquaintances of Horn since their stay in Sweden in 1709-1714.