Today`s Garrykennedy at Lough Derg was once a fortification of the O`Kennedyââ¬â¢s. In the 15th Century this old Irish clan built a tower house at the sheltered bay, with which they controlled the strategically important harbour and the surrounding lands. The incursion of Cromwell`s troops put an end to the reign of the clan. Records from the mid-17th Century indicate that Garrykennedy Castle was al