Simplify the following text for a Grade 11 native English-speaking person.
Original: His henchman , Kurwenal , answers more brusquely , saying that Isolde is in no position to command Tristan and reminds BrangÃ ne that Isoldeâ s previous fiancÃ , Morold , was killed by Tristan ( `` Herr Morold zog zu Meere her . '' )
Simplified: His henchman , Kurwenal , speaks crossly to Brangaene , reminding her that Isoldeâ s previous fiancÃ , Morold , had been killed by Tristan and his head sent back to Ireland .