An Achd Aonachaidh -1536

"His highness, therefore, of a singular Zeal, Love and Favour that he beareth towards his subjects of his said Dominion of Wales, minding and intending to reduce them to the perfect Order, Notice and Knowledge of his Laws of this his Realm, and utterly to extirp all and singular the sinister Usages and Customs differing from the same .... Be it enacted by the authority aforesaid, that all Justices, Commissioners, Sheriffs, Coroners, Escheators, Stewards and their lieutenants and all other officers and ministers of the Law, shall proclaim and keep the sessions, courts in the English tongue; and all oaths of officers, juries and inquests, and all other affidavits, verdicts and wagers of law to be given and done in the English tongue; and also that from henceforth no person or persons that use the Welsh speech or language shall have or enjoy any manner of office or fees within this realm of England, Wales or any other King's Dominion upon the pain of forfeiting the same office or fees, unless he or they use and exercise the English speech or language".