|The first Tower Castle, constructed by Red Hugh O’Donnell, was built in the 1400’s AD. During the 9-year war, the O’Donnell’s were forced to abandon the Castle at Donegal. Before leaving, they did their best to make the Castle as unusable to the English as possible, destroying as much as the castle as they could. After the Irish defeat, Sir Basil Brooke took charge of Donegal for the English and on the remains of the castle added an additional floor. He also added an attached wing to the castle, which was architecturally, similar to the manor homes of England.
Figure Right – An approximate rendering of O’Donnell’s Castle Keep prior to the changes by Sir Basil Brooke.