Henry Somerset, then the 5th Earl of Worcester
Corfe Castle is now owned by the National Trust who were given it by the Bankes family (link below) who owned it having bought in 1635. The castle was owned by the Crown until Elizabeth 1 sold it in the 16th century
Ballynahinch Castle
The year that the Tintagel Castle was built is not known, but it was built during the 13th century. It is made of stone and rubble, and is now owned by the Duchy of Cornwall.
Cadw.
In the 11th century, Cardiff Castle was owned by the Normans after they invaded Wales. The castle was originally built by the Normans in the late 11th century, with Robert Fitzhamon, a Norman lord, being one of its early owners. The castle served as a strategic fortification and administrative center during this period, reflecting the Norman conquest and control of the region.
Ballynahinch Castle
Roughly around 25%-30%
Carrickfergus Castle is wrong its Ballynahinch Castle
The SS Morro Castle, destroyed by fire off New Jersey in 1934, was owned by the WARD LINE
The king and the nobles.
A castle was generally a fortified house owned by kings and queens
During the US Civil War, the Confederacy built the largest nationally owned factory in the world. It was the Augusta Powder Works in Georgia. It produced, among other products, lead, shoes and rifles.