It is not very clear at what date Bartle began to identify himself with the United Irishmen; but it seems to have been about the same time as Lord Edward Fitzgerald and Arthur O’Connor joined them, that is to say early in 1796. He became the fast friend of Lord Edward, and before Charles’s arrest on September 16th, 1796, the two brothers were frequent guests at Kildare Lodge. It was here that Bartle met and loved the fair Lady Lucy Fitzgerald, Lord Edward’s favourite sister, and who shall say that he loved Ireland the less, because his vision of Kathleen Ni Houlihan borrowed the lovely ardent face, and the bright eyes, veiled with long dark drooping lashes of “Lucia.” While Lord Edward and O’Connor were on the Continent negotiating with the French Government, Bartle Teeling, under a plausible plea of a business journey, made a complete tour of Ireland on foot. His object, according to his nephew, was to make himself “perfectly acquainted with Ireland’s resources, with her capabilities of entering upon, and maintaining an internal war, with the intellectual and physical qualities, the habits and the manners of her people, with their wants and their endurance, their hopes and their resolves; as well as with the natural features of the country—her rivers, her coasts, and her harbours.” The fact shows that Bartle Teeling, for all his youth, was amongst the most far-sighted of the leaders. After his return from this journey he took up his residence in Union Lodge, with his friend, John Byrne, of Worcester, who having served his apprenticeship to the linen trade in Lisburn had established extensive bleaching mills on the banks of the river at Dundalk.