 They were also in union with the allies of King Władysław I - the Scandinavian Kings and the Pomorian Dukes, against the Margraves of Brandenburg (1315).Sources differ on the circumstances of his death; most historians agree he died, together with his brother Andrew, in 1323, but there is disagreement over whether they were battling the Mongol-Tatars or the Lithuanians, and over whether the deaths occurred while defending Pidliashia or Berestia.Both King Lev and his brother King Andrew were apparently much respected in the west.