In her selection of a leader for the expedition she allowed herself to be swayed rather by feeling than by reason. Her choice fell on Robert Devereux, Earl of Essex, a handsome man of thirty-two, having many superficial advantages, but whose success in military affairs had not, so far, been remarkable. He was the son of Walter Devereux, Earl of Essex, whose attempt at a Plantation in Ulster had ended so unfortunately, and since Leicester’s death in 1588 he had been the Queen’s chief favourite.

The title of Lord Lieutenant of Ireland, more honourable than that of Deputy, was now conferred on him. The army placed under Essex’s command was, with the exception of that which followed Richard II in 1394, the largest that had ever crossed from England to Ireland. It numbered 16,000 infantry and 1,300 cavalry, all well armed and equipped. If the troops already in the country be added, we may estimate that the Lord Lieutenant had at his command a force of at least 21,000 or 22,000 men.

The policy inaugurated by Queen Mary of establishing English colonies in Ireland, as a means of extending the authority of the Crown, seemed to her sister worthy of imitation. She gave permission, on request, to certain private individuals to ” plant ” specified portions of land, which, if they succeeded in their enterprises, they could hold from the Crown. The rights of the Irish proprietors who were to be dispossessed were not considered.