Sir William Blackstone, Commentaries on the Laws of England…
“ But to this ordinance many of the Irish were averse to conform, and still stuck to their Brehon law: so that both Henry the third [k] and Edward the first [l] were obliged to renew the injunction; and at length in a parliament holden at Kilkenny, 40 Edw. III, under Lionel duke of Clarence, the then lieutenant of Ireland, the Brehon law was formally abolished, it being unanimously declared to be indeed no law, but a lewd custom crept in of later times. And yet, even in the reign of queen Elizabeth, the wild natives still kept and preserved their Brehon law ”
