Complex sentence: He won the affection of the monks and abbots, both as junior and senior, was equally popular in neighbouring monasteries and in the country around, and was employed in every branch of the business of the monastery, both internal and external.
Split into simpler sentences: He won the affection of the monks and abbots, both as junior and senior, and was equally popular in neighbouring monasteries and in the country around. He was employed in every branch of the business of the monastery, both internal and external.