Their holdings have since been reduced to include a 4000-acre walled estate, just outside Carrickmacross, where the family seat, Lough Fea house, is located.
The text now follows of a plaque recently erected there in memoriam: " In 1843 the tenants on the Shirley estate, of which Magheracloone was a part, refused to pay their rent until their complaints had been addressed by the landlord.
Attempts by the bailiffs to seize cattle or goods from the tenants who would not pay were stopped by the activities of 'The Molly Maguires'.
The centre of British rule in Ireland, Dublin Castle, agreed to provide troops to protect the agents who were serving notices of eviction to tenants.
The Company Commander, fearful of a greater slaughter, called his troops back to their carriages and they beat a speedy retreat, followed all the way by angry remnants of the crowd.
Peter Agnew from Lisnaguiveragh, Carrickmacross was at service with Owen Smith of Corrybracken Two days later the coroner's jury (composed of six Protestants and thirteen Roman Catholics) held that as it was not known whose shot had killed the boy, no responsibility could be assessed.
But the jury pointedly commented that 'it has not been sufficiently proved to us that at the time of the firing the party of Constabulary were in imminent risk of their lives'.
While this incident may be described as a mere skirmish with one fatality, reporting of the event in the local, national and international newspapers prompted questions to be raised in the House of Commons ".
At that time, Catholics attended school and worshipped outside at 'hedge schools' and 'mass rocks', as they were barred from having suitable buildings for these purposes, speaking Irish was banned, and the people were required (in public office and many professions) to take an oath citing the supremacy of the monarch over the Roman Pontiff - an oath which Catholics obviously could not take.
It is said that, during the Penal Laws, local Protestants kept watch on the hills above to ensure the safety of their Catholic neighbours hearing mass by the river in the valley below.
Peter & Paul church (a 'barn church' constructed in 1825) were extensively damaged as a result of perhaps well-meaning but nonetheless gravely ill-conceived 'renovations' by then parish priest, Canon Drum, much to the consternation of locals who wished to continue worshiping at the altar built by their ancestors as an expression of their civic pride in the climate of Catholic Emancipation.
Born and raised in the town-land of Greaghlone, he went on to achieve international fame, becoming the first person photographed while playing a harp.
Local harpist and All-Ireland medal winner, Rosey McCabe, played some traditional tunes at the unveiling.
Magheracloone is also home to several businesses, shops (including O'Rourke's service station and McGrane's 'Country Store') and numerous schools including Drumgossatt National School (formerly a barn church until Ss Peter & Paul was constructed); it has recently been extended to accommodate a significant increase in numbers.