Polish historian Jan Tęgowski disagreed with Jonynas and argued that both Sudimantas and Lev of Drutsk (who is also mentioned as Vytautas' swoger) were married to sisters of Vytautas's first wife, Princess Maria of Lukoml.
According to Russian sources, his father is supposed to have been a Rurikid prince of Drutsk.
Drutsk |