Complex sentence: In turn, the Strangways acquired the castle by marriage a century later, before it passed to the Crown during the reign of Henry VIII. However, it was not maintained and by 1600 the gatehouse was described as "old and ruinous".
Split into simpler sentences: In turn, the Strangways acquired the castle by marriage a century later. The castle passed to the Crown during the reign of Henry VIII. However, it was not maintained and by 1600 the gatehouse was described as "old and ruinous".