Early History in Ireland

It is unknown when the Casses first arrived in Ireland but the earliest recording of the name can be found in the Calendar of Ormond Deeds 1172-1350

Henry Schenegord grants to Adam le Leye, burgess of Kilkenny, and his heirs in fee, eight acres in Corbali, two of which fie together in the moor between the land of William Casse and the land of Nicholas Brabezun ; and six acres lie in four places in the field that lies between the mansion that was Walter Cor’s, and the land that was Nicholas Brabecun’s ; paying yearly two shillings silver, saving to grantor and his heirs said rent and to Sir William Grasse and his heirs suit of their mill. {circa 1277}

 William Cass quit-claims to Thomas de Lega, the elder, and his heirs fifteen acres in the tenement of Corbali Kylnahc which he bought of John Cass his son. Consideration fourteen marks  {circa 1277}

 John Casse,son of William Casse, quit claims to Thomas de Lefa, the elder, burgess of Kilkenny, and his heirs fifteen acres in Corbali Kylnahc {circa 1277)

William Casse grants to Lord James le Botiller, Earl of Ormond, all messuages, lands, rents, services and tenements both in lordships and in demesnes which he had in Crossedermore in the tenement of Cloghyr.To have and to hold to the said James and his heirs in fee and heritage for ever. {February,1337}

Nicolas Casse :  Court grants mercy for not showing up after being summoned {1359}

Nicolas Casse:in Thurles, awarded 20d.(pennies) from Thomas Brit for not keeping his pledge.{1375)

William son of Nicolas Casse in Clonmel, forfeited 12d.(1375)

Walter Casse : in Clonmel, listed as participating lawyer in that day’s hearings {about 1400}

William Casse:  Witnesses deeds and grants {1402}

William Casse of Thurles, forfeited 12d

Will (in English) of Laurence Casse of Dublin. {March 13 1575}


One of our earliest surviving record sources is the so-called fiants of the reign of Elizabeth the First’ The originals were lost in the Four Courts Fire in 1922 but they have been indexed and published. These were warrants to the Court of Chancery in Ireland, which was the authority for the issue of letters patents under the Great Seal. They dealt with matters ranging from appointments to high office and important government activities, to grants of pardons to the humblest of the native Irish. Among those who obtained pardons were the following individuals named Cass

Thomas Casse in 1571

James and John Casse in 1574

Thomas Casse in 1574

Fegher O Casse in 1586

Rob Casse in 1602

1641 Depositions

The 1641 Depositions were  witness testimonies mainly by Protestants, but also by some Catholics, from all social backgrounds, concerning their experiences of the 1641 Irish rebellion. These depositions fall into 5 categories.  One of them is named the Blisse Deposition and mentioned in a deposition dated 13th March 1643 of  Thomas Pope is an Edmond Casse from Tipperary.

Hearth Money Records

This was a tax introduced in the reign of Charles 11 in 1662. The  tax was levied on the basis of the number of hearths in each house. The rolls were enumerated by parish and usually record the name of the head of the household, the number of hearths, and the amount of the tax levied.Mentioned in  The following are the Cass heads of households listed in the Hearth Tax Rolls for Co Tipperary from 1665-1667:

Baronia de Elliogurty and Ikyryn

Parochia  of Borresliegh and Ballymurrine, James Casse paid 2 shillings for 1 hearth

Parochia de Inchofofarty, Philip Casse paid 2 shillings for 1 hearth.

Parish of Galbooly, Thomas Casse paid 2 shillings for 1 hearth.

Hearth Money Rolls, Co Kilkenny

Barony of Knocktopher

Denis Cass in the parish of Aghviller

Barony of Galmoy

Philip Cass in the parish of  Erke

Convert Rolls and Catholic Qualification Rolls 1701-1845

In 1703, an act was passed to prevent a” further growth” of popery which made it obligatory on converts from Catholicism to Protestantism to provide proof of conformity. Once converted, all legal disabilities in relation to owning property were removed.The Convert Rolls recorded those who converted to the Church of Ireland, whether in form only or through conviction, as a result of the Penal Laws. The Catholic Qualification Rolls recorded those who, from 1778, took an oath of allegiance to the Crown in order to avail of relaxations of the Penal Laws through various Acts of Parliament. These were prosperous Roman Catholics were had no notion of changing religion.  

 The Catholic Qualification Rolls for 1781 record 2 individuals named Cass who swore an oath of allegiance to the crown.Both are from Co Kilkenny.

 23 August 1781.Richard Cass -Grangemacome

23 August 1781.James Cass- Tullomairon