Complex sentence: A few years later it passed to Sir John Williams, 1st Baron Williams de Thame, who in turn left it to his daughter Margery and son-in-law Henry Norris, 1st Baron Norreys.
Split into simpler sentences: A few years later it passed to Sir John Williams, 1st Baron Williams de Thame. He left it to his daughter, through whose marriage it passed to Henry Norris, 1st Baron Norreys.