Complex sentence: In 1692, Robert Sawyer, a lawyer and college friend of Samuel Pepys, bequeathed a mansion at Highclere to his only daughter, Margaret, the first wife of the 8th Earl of Pembroke.
Split into simpler sentences: In 1692, Robert Sawyer, a lawyer and college friend of Samuel Pepys, bequeathed a mansion at Highclere to his only daughter, Margaret. Margaret was the first wife of the 8th Earl of Pembroke.