context: Lothar II or Lothar III [1] of Supplinburg (9 June 1075 - 4 December 1137) was Duke of Sachsen (1106), King of Germany (1125), and Holy Roman Emperor from 1133 to 1137. He is the son of Comte Gebhard from Süpplingenburg. His reign experienced chaos because of the intrigue between Friedrich II of Swabia against Duke of Konrad of Franconia. He died while returning from a successful military campaign against the Norman Kingdom of Sicily.
question: When was Lothar II born?
answers.text: 9 June 1075