Throughout the historical period known as the Anglo-Irish Union (1801-1922), nationalist orthodoxy - with the exception of a few theorists such as James Fintan Lalor and James Connolly - brought the "Parliament of Grattan" (1782-1800) to the pinnacle, lending it the most remarkable economic record. This article examines the extent to which the idealization of the Grattan Parliament included a hagiographical dimension used for ideological-political purposes. This through an analysis of the ideological, political and economic realities of the Grattan Parliament's time.