Complex sentence: Despite Johnson's poor opinion of Langton's laziness with respect to his own finances, he left Langton £750, from which he was expected to pay an annuity to Francis Barber who had been Johnson's servant.
Split into simpler sentences: Despite Johnson's poor opinion of Langton's laziness with respect to his own finances, he left Langtom £750. From which he was expected to pay an annuity to Francis Barber who had been Johnson's servant.