Isolated by the departure of the papal nuncio from Ireland in February 1649, he made overtures for alliance to Ormonde, and afterwards with success to Monck, who had superseded Monro in command of the parliamentarians in the north.
O'Neill's chief need was supplies for his forces, and failing to obtain them from Monck he turned once more to Ormonde and the Catholic confederates, with whom he prepared to co-operate more earnestly when Cromwell's arrival in Ireland in August 1649 brought the Catholic party face to face with serious danger.
At the end of 1652 Deane returned to his command as general-at-sea, where Monck had succeeded Popham, who had died in 1651.
Lord Monck was appointed the first governor-general, and at his request the Hon.
The following governorsgeneral have represented the crown since the federation of the provinces, with the year of their appointment: Viscount Monck, 1867; Sir John Young (afterwards Baron Lisgar), 1868; the earl of Dufferin, 1872; the marquess of Lorne (afterwards duke of Argyll), 1878; the marquess of Lansdowne, 1883; Lord Stanley of Preston (afterwards earl of Derby), 1888; the earl of Aberdeen, 1893; the earl of Minto, 1898; Earl Grey, 1904.