 The newborn princess was named Elizabeth Bonifacia (, ), after Jadwiga's mother and Pope Boniface IX who, in a letter of 5 May 1399, had agreed to be godfather under the condition that the infant be called Boniface or Bonifacia.She was baptised by Piotr Wysz Radoliński, Bishop of Kraków.However, the infant died after only three weeks, on 13 July 1399.