Ballynahinch Castle
Carrickfergus Castle is wrong its Ballynahinch Castle
Ballynahinch Castle
The castle formerly owned by the Guinness family is Ashford Castle, located in County Mayo, Ireland. Built in the 13th century, it was transformed into a luxury hotel and is renowned for its stunning architecture and beautiful grounds. The Guinness family acquired it in the 1930s, and it remained in their possession until it was sold in the late 20th century. Today, Ashford Castle is a popular destination for travelers seeking a taste of Irish history and elegance.
Kilkenny Castle was bought by the Butler family in Ireland in 1391 and they owned it until 1967. There is no direct connection between the actor Gerard Butler and Kilkenny Castle. His great-grandparents were Irish. He was born in Scotland.
Presumably the owned hotel is run by the owner and the managed hotel is run by an employed manager.
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
Cadw.
Ballynahinch Castle
Most commonly, a hotel is owned by a corporate owner who then rents rooms in the property. A condominium hotel could be run like a hotel, but with units -- rooms -- owned by individual owners.
Dublin Castle can be dated back to 1204, but there have been many parts built in that time by different people. See the link below for some more detailed history.
The king and the nobles.