[3] The feud between the two men continued and in 1773, Morris demanded that Art sell him the fine horse that Ó Laoghaire had brought back from his service in the Austro-Hungarian army for £5.
The Penal Laws stated that no Catholic might own a horse worth more than £5 and could be forced to sell a more valuable one on demand to any Protestant at this price.
Morris led a contingent of soldiers that tracked Ó Laoghaire down to Carrignanimma on 4 May 1773, and he gave the order to fire on Art.
[1] His wife Eibhlín Dubh Ní Chonaill composed the long poem "Caoineadh Airt Uí Laoghaire" (Lament for Art O'Leary), mourning his death and calling for revenge.
Ó Laoghaire's tomb at Kilcrea Friary has the epitaph (probably composed by his widow): "Lo Arthur Leary, generous, handsome, brave, / Slain in his bloom lies in this humble grave."