Vaisvilka of Navahrudak (St. George's Night)

Vaisvilka of Navrahudak was the Regent of Livonia during the minority of Vesse II, and one of Livonia's diplomatically skilled rulers. The wife of Thaarason II, she took power upon his death in 1445. The daughter of a prominent Lithuanian nobleman, she deepened already-close relations between Livonia and Lithuania, while also maintaining Livonia's tenuous status as a pagan state under the Christian Danish monarchy. She is best known for directing Livonia's expansion eastward into Novgorodian territory. Heavily reliant upon the castrati general Béla Csaba, she was able to maintain stability within Livonia during a period of vulnerability. The precise nature of her relationship with Csaba is still debated by historians.