On 25 June 1604 in Berlin, she married her first husband, Duke Philip Julius of Pomerania-Wolgast (1584–1625).

[1] After Philip Julius's death, Agnes lived on her wittum, the district of Barth.

Dubslaff Christoph von Eickstedt auf Rothenklempenow, who had been adviser to her husband, served as her privy counsellor and captain.

[2] Elisabeth was married again on 9 September 1628, at Schloss Barth, to the ten years younger Duke Francis Charles of Saxe-Lauenburg (1594–1660), who was a general in the imperial army.

However, Francis Charles persuaded Wallenstein to force Duke Bogislaw XIV to allow her to keep Barth until her death.