Complex sentence: The title takes its name after Tonbridge, a market town in Kent, and its role is to assist the Diocesan Bishop of Rochester as well as running the Archdeaconry of Tonbridge.
Split into simpler sentences: The title takes its name after Tonbridge, a market town in Kent. The bishop assists the diocesan Bishop of Rochester as well as having a particular ministry in the Archdeaconry of Tonbridge.