The county town of Dumbarton on the river Clyde owes its origins to the rock that dominates the skyline and its bridge over the river Leven that provided access to the west. In its early history, Dumbarton was a sea-port of some importance but the industry of its larger neighbour, Glasgow, in deepening the Clyde diminished the trade. By virtue of an agreement made at the beginning of the eighteenth century, Dumbarton owned ships were exempt from the dues payable to Glasgow for the use of the waterway, and Glasgow worked over the years to remove this exemption, first limiting it to ships owed by burgesses of Dumbarton in 1825, then in 1858, after the railway had all but driven the Dumbarton steamboats from the river, it was removed altogether after compensation was paid by the Clyde Trustees, though ship-owning burgesses who served before that date were given continued exemption....