Complex sentence: The King, Jane and Henry Lascelles with great coolness rode through the troops and then through Stratford-upon-Avon, an on to Long Marston where they spent the night of 10 September at the house of John Tomes, another relation of Jane's.
Split into simpler sentences: The King, Jane and Henry Lascelles with great coolness rode through the troops. The party then continued through Stratford-upon-Avon, and on to Long Marston where they spent the night of 10 September at the house of John Tomes, another relation of Jane's.