Castle Matrix

Thomas FitzJames FitzGerald, 7th Earl of Desmond, erects a formidable tower house on the River Deel as a stronghold for the powerful Geraldine dynasty in Munster. The name "Matrix" is believed to derive from "Matress" — or perhaps Matres, a Celtic mother-goddess.

James FitzGerald, Earl of Desmond, is murdered at age 28 inside Castle Matrix by his own servant — allegedly at the instigation of his own brother John. In a savage revenge, brother Maurice executed every servant involved, beginning the castle's legacy of blood.

Sir Walter Raleigh occupies Castle Matrix, or at least stays there at length, during the Desmond Rebellion. He hosts poet Edmund Spenser and is credited with planting the first potatoes in Irish soil on the castle grounds. But Raleigh's tenure is also said to bring a dark massacre of starving villagers.

Irish Confederate forces storm Castle Matrix, driving out the Protestant Southwell occupants. For ten years the castle serves as a Confederate stronghold during Ireland's devastating Eleven Years' War.

Oliver Cromwell's Parliamentarian army besieges Castle Matrix with artillery, battering the ancient walls with cannon fire — yet the tower holds. The fortress falls under English control once more, its stones scarred but standing.

Sir Thomas Southwell settles 100 German Palatine refugee families on his Rathkeale estate. Castle Matrix becomes the administrative heart of this remarkable chapter in Irish immigration and cultural diversity.

Thomas Southwell, who eight years earlier settled the Palatines on his Rathkeale estate, is created Baron Southwell. Castle Matrix is still the family seat in 1776, when the 3rd Baron is raised to a viscountcy. At their height the Southwells hold 60,000 acres across Ireland and work a profitable flour mill on the riverbank below the castle.

The Southwells move to a house near Kingstown and let Castle Matrix to a succession of tenants, beginning with their land agent, Captain Brown. The mullioned windows and stepped battlements that crown the tower today date from this decade. A tenancy agreement of 1853 records nine bedrooms, a dining room, and a library within the walls.

The Johnstone family, then owners, strip the castle of its roof rather than pay the tax levied on habitable buildings. The tower is left an open shell, and for three decades Castle Matrix stands abandoned to the Limerick weather — the ruin Colonel O'Driscoll would find in 1961.

Colonel Seán O'Driscoll — WWII veteran, aide to MacArthur, friend of Jimmy Stewart — purchases the derelict castle and spends a decade restoring it to its former glory: seven bedrooms, six bathrooms, a great room, a chapel, a dungeon, a guard room, and a beautiful library filled with 12,000 books and a world-class collection of military history.

Bob Tiernan — retired U.S. Naval Commander, lawyer, and contractor — buys Castle Matrix and commences repairs and restoration. After more than six centuries of siege, ruin, and revival, the storied fortress is no longer waiting: its grey stone walls stand once more above the River Deel, and its next chapter has begun.