Pagamus De Hacket arrived in Ireland in the suite of Henry II, and witnessed an endowment from Hugh Tyrrell, Baron of Castleknock, to the priory of Kilmainham about 1180.  He obtained large grants of land, and had two sons, Reginald and William, the latter of whom gave up his infant son, Peter, as hostage to King John in 1204, for John De Courcy, Earl of Ulster.  Another Hacket is recorded as a hostage for Walter De Lideford ( de Ridelsford?), Baron of Castledermot and Bray, Co.Wicklow.

There was no mention of Pagamus in the pedigree in the Ulster's office. It would seem probable that more than one member of the family came to Ireland about that time. There was a Rowland Hacket at Kinsale in 1200, and a Philip Hacket had a grant of Kells Priory, Co. Kilkenny in 1212.

In 1217-1219 we find reference in the Irish state papers to a William Hackett of Drumlore, and a Roger, or Reginald of Clondermot. They were probably the above named sons of Pagamus.

Jason and Justin can trace their lineage back directly as the pedigree to William De Hacket.

There is no record of the early Hacketts playing Bridge (playing cards not having been invented then), but they were probably experts at Chess and Backgammon!

Thirteenth Century Coffin Lid Effigies of the Hackett Family Taken in the Eighteenth Century from St Dominick's Abbey and placed in the City walls of Cashel Possibly Sir William Hackett and his wife and family