Anastasia of Greater Poland

The High Duke gained a faithful ally with this son-in-law, who was the only who supported him when he was exiled from Poland due to the rebellion of his eldest son (and Anastasia's half-brother) Odon.

The deaths of Princes Ratibor (14–15 January 1183) and Wartislaw (18 February 1184), left Anastasia's sons as the only heirs of Duke Bogislaw I.

For this, they succeeded in the Duchy as co-rulers under the regency of their mother, who was assisted in the government firstly by Wartislaw, castellan of Stettin (during 1187–1189) and later by Jaromar I, Prince of Rügen (during 1189–1198).

However, the real authority over the Duchy of Pomerania was held by Anastasia until 1208, when her sons were declared adults and began their personal government.

Four years later, on 7 July 1224, she issued a document under which she approved the foundation of a Norbertine monastery in Trzebiatów,[2] which was richly endowed by the Dowager Duchess, giving to them a part of her widow's seat (received after his marriage): twenty castles and seven villages.