Complex sentence: The house was completed in 1583 by the Elizabethan Lord Chancellor, Sir Christopher Hatton, who refused to sleep a night in the mansion until Queen Elizabeth I had slept there.
Split into simpler sentences: The house was completed 1583 by the Elizabethan Lord chancellor, Sir Christopher Hatton. Following the great house's completion Hatton refused to sleep a night in the mansion until Queen Elizabeth I had slept there.