Complex sentence: In the reign of King Henry II, Robert became the first chief justiciar of England who was the King's chief minister, a position he held for fourteen years, earning him much respect for the administration of the law.
Split into simpler sentences: In the reign of King Henry II, Robert became the first chief justiciar of England who was also the King's chief minister. He held this position for fourteen years, earning him much respect for his administration of the law.