Newark Castle, Port Glasgow

Newark Castle is a well-preserved castle sited on the south shore of the estuary of the River Clyde in Port Glasgow, Inverclyde, Scotland, where the firth gradually narrows from the Firth of Clyde and navigation upriver is made difficult by shifting sandbanks. For centuries this location was used to offload seagoing ships, and led to the growth of Port Glasgow close to the castle on either side and to the south. When dredging techniques made the Clyde navigable as far as Glasgow the port became a shipbuilding centre, and the castle was surrounded by shipyards. Ferguson Shipbuilders, the last shipyard on the lower Clyde, stands close to the west of the castle, but the shipyards to the east were removed around the 1980s and new landscaped areas formed to the east of Newark Castle, opening up scenic views of the castle and across the Clyde from a new bypass road.

The castle was built in 1478 by George Maxwell when he inherited the Barony of Finlanstone (Finlaystone) in the parish of Kilmacolm. The original castle had a tower house within a walled enclosure or barmkin entered through a large gatehouse. All that remains of the outer defensive wall is from one of the original corner towers. It is thought that there would have been a hall and ancillary buildings such as a bakehouse and brew house inside the walled enclosure.

In the late 16th century the castle was inherited by Sir Patrick Maxwell, a powerful friend of king James VI of Scotland and who was notorious for murdering two members of a rival family and beating his wife who left him after having 16 children. In 1597 Sir Patrick expanded the building, constructing a new north range replacing the earlier hall in the form of a three storey Renaissance mansion. At this time the barmkin wall was demolished except for the north east tower, which was converted into a doocot.

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