These adverse votes were communicated with great trepidation, by the Lord Lieutenant, to the British administration. At length Lord North thought it essential to make some concessions, and with this view he brought in resolutions, declaring the trade with the British colonies in America and Africa, and the free export of glass and woollens, open to the Irish merchant. A week later, similar resolutions were passed in the Irish Commons, and in February, 1780, "a free trade" in the sense in which it had been demanded, was established by law, placing Ireland in most respects, as to foreign and colonial commerce, on an equality with England.
In February, the Viceroy again alarmed the British administration, with the reported movement for the repeal of "Poyning's law,"—the statute which required heads of bills to be transmitted to, and approved in England, before they could be legislated upon. He received in reply, the royal commands to resist by every means in his power, any attempted "change in the constitution," and he succeeded in eliciting from the House of Lords, an address, strongly condemnatory of "the misguided men," who sought to raise such "groundless jealousies," between the two kingdoms. But the Patriot Commoners were not to be so deterred. They declared the repeal of Poyning's act, and the 6th of George I., to be their ultimatum, and notices of motion to that effect were immediately placed on the journals of the House of Commons.
In the early days of April, Grattan, who, more than any of our orators, except perhaps Burke, was sensitive to the aspects of external nature, and imbued with the poetry of her works, retired from the city, to his uncle Dean Marlay's house, Cellbridge Abbey, formerly the residence of Swift's ill-fated Vannessa. "Along the banks of that river," he said, many years afterwards, "amid the groves and bowers of Swift and Vannessa, I grew convinced that I was right; arguments, unanswerable, came to my mind, and what I then presaged, confirmed me in my determination to persevere." With an enthusiasm intensified and restrained—but wonderful in the fire and grandeur of its utterance—he rose in his place, on the 19th of the month, to move that "the King, Lords, and Commons of Ireland, are the only power competent to enact laws to bind Ireland." He was supported by Hussey Burgh, Yelverton, and Forbes; Flood favoured postponement, and laid the foundation of his future estrangement from Grattan; Daly was also for delay; Fitzgibbon, afterwards Lord Clare, Provost Hutchinson, and John Foster, afterwards Lord Oriel, resisted the motion. The Castle party moved in amendment that "there being an equivalent resolution already on the journals of the House"—alluding to one of the resolutions against Stafford's tyranny in 1641—a new resolution was unnecessary. This amendment was carried by 136 to 79, thus affirming the formula of independence adopted in 1641, but depriving Grattan of the honour of putting it, in his own words, on the record. The substantial result, however, was the same; the 19th of April was truly what Grattan described it, "a great day for Ireland." "It is with the utmost concern," writes the Viceroy next day to Lord Hillsborough, "I must acquaint your Lordship that although so many gentlemen expressed their concern that the subject had been introduced, the sense of the House _against_ the obligation of _any statutes_ of the Parliament of Great Britain, within this kingdom, is represented to me to have been almost unanimous."