Complex sentence: On 24 June 1380, at Kenilworth Castle, she married John Hastings, 3rd Earl of Pembroke, she was seventeen years old and the groom was only eight.
Split into simpler sentences: On 24 June 1380, at Kenilworth Castle, she married John Hastings, 3rd Earl of Pembroke. She was seventeen years old and the groom was only eight.