Rimgailė (also Rymgajla, Rimgaila, Ringaila, Polish: Ryngałła, Romanian: Ringala; c. 1367 – 1423 or 1430[1]) was a Lithuanian princess of the House of Kęstutis.
[2] Rimgailė (feminine) or Rimgailas (masculine) is a typical dual-stemmed pagan Lithuanian name constructed from rim- (rimti - "be calm") + gail- (*gailas - "strong"), which is quite common in Lithuania at present.
[4][5] Jan Długosz in his chronicles wrote that to marry her Henry resigned from the title of Bishop of Płock.
Henry's death was allegedly due to poison, with Rimgailė as one of the potential suspects.
[9][10] Also, as part of the divorce settlement Alexander the Good promised to pay her lifetime income worth 600 Hungarian gold ducats or florins payable in two installments.