Complex sentence: In 910 the church and its adjoining palace were burnt down and the monks left Hitchin for St Albans Abbey following which local, people used stones from the ruined church to build a new parish church.
Split into simpler sentences: In 910 the church and its adjoining palace were burnt down and the monks left Hitchin for St Albans Abbey. Locals used stones from the ruined church to build a new parish church.