The Irish Rebellion of 1798 was led by members of the Anglo-Irish class, some of whom feared the political implications of the impending union with Great Britain. Reformist and nationalist politicians such as Henry Grattan (1746–1820), Wolfe Tone (1763–1798), Robert Emmet (1778–1803), and Sir John Gray (1815–1875) were also Protestant nationalists, and in large measure led and defined Irish nationalism. At the same time the British Government included Anglo-Irish figures at the highest level such as Lord Castlereagh (1769-1828) and George Canning (1770-1827), as well others such as the playwright Richard Brinsley Sheridan (1751-1816). Even during the late 19th and early 20th centuries, when Irish nationalism became increasingly tied to a Roman Catholic identity, it continued to count among its leaders Protestants like Charles Stewart Parnell (1846–1891).