Foreign diplomats recognised her as an essential contact and promoted an anti-French and pro-Austrian policy through her spouse and his office.
In 1667, Magdalena Stenbock married riksråd count Bengt Gabrielsson Oxenstierna, who was appointed Council President in 1680.
Foreign diplomats pointed her out as a key figure in Swedish politics because of her influence and as an important person to cultivate.
[2] The ambassadors of Austria (Franz Ottokar Starhemberg), Netherlands (Walraven van Heckeren), Lüneburg (Görtz) and Saxony (Senff von Pilsach) were all frequent guests in her salon.
Magdalena Stenbock's marriage with Bengt Gabrielsson Oxenstierna produced 15 children in just 20 years, but only seven of them lived to maturity: