Complex sentence: Robert escaped and made his way to Chester, where in 1645 he was made High Sheriff of the county of Cheshire, but he was forced to flee from the city early the following year when it too was besieged by Cromwell's forces.
Split into simpler sentences: Robert escaped and made his way to Chester, where in 1645 he was made High Sheriff of the county of Cheshire. But he was forced to flee from the city early the following year when it too was besieged by Cromwell's forces.