Ivar betrayed Sweden, admitting in 1476 that he was promised Gotland as a fief by the Danish king.

Ivar was deemed as a traitor to Sweden, upon which Princess Magdalena, by order of Erik Oxenstierna at the council of Vadstena, was abducted and kept hostage by the enemies of her spouse.

Magdalena was the benefactor of the Grey Friar's Abbey on Riddarholmen in Stockholm, to which she made many donations.

She was honoured by the Grey Friar's Abbey with the inscription Propentissima Benefactrix Ordinis Nostri.

She died in Söderköping and was buried in the Grey Friar's Abbey there, of which few visible ruins remain.