Simplify the following text for a Grade 8 native English-speaking person.
Original: King Richard ordered Henry to live outside England for ten years ( with the approval of Henry 's father , John of Gaunt ) but Thomas de Mowbray was exiled from England for life .
Simplified: Yet before the duel could take place , Richard II instead decided to banish Henry from the kingdom ( with the approval of Henry 's father , John of Gaunt ) to avoid further bloodshed . Mowbray himself was exiled for life .