Complex sentence: The church and school became the property of Tewkesbury Abbey around 1130 after becoming part of the Norman kingdom of Glamorgan but after the dissolution of the monasteries by Henry VIII during the Reformation, it became independent from Tewkesbury in 1539.
Split into simpler sentences: The church and school became the property of Tewkesbury Abbey around 1130 after becoming part of the Norman kingdom of Glamorgan. After the dissolution of the monasteries by king Henry VIII during the Reformation, it became independent from Tewkesbury in 1539.