 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.In May 1323, Polish King Władysław I, in a letter to the Pope, wrote with obvious regret