Of a very different character and temperament was his brother, another Sir Richard Grenville, of whose life as a soldier only the very briefest sketch can be given. He seems to have had little in common with the long line of his illustrious predecessors, except their just pride of ancestry and their appetite for fighting; for he was undoubtedly a brave soldier of no little experience and skill. He entered the army at an early age, and left England when he was eighteen, and saw much service in France, Holland, Germany, and the Netherlands. Next he took part in the disastrous expeditions to Cadiz and the Island of Rhe, in both of which he was accompanied by his young cousin, George Monk, who always regarded him as his father-in-arms. Like Sir Bevill, he accompanied Charles I. to Scotland, having also raised a troop of horse; and in 1641 he took a prominent part in suppressing the rebellion in Ireland, when in fire and blood the wretched Irish were made to do penance for their outburst of savagery, to which they had been goaded by Strafford’s imperious rule. Having been recalled to England in 1643 for insubordination to the Marquis of Ormond, Sir Richard pretended to adopt the Parliamentarian cause, and was made a Major-General of Horse; but having learnt all the secrets of their campaign, he treacherously marched his soldiers to Oxford, and joined the King. For such abominable treachery he was rightly denounced, and no epithets were too choice to apply to him. He was, moreover, excepted from all pardon, both as to life and estate. Shortly afterwards he was placed by Prince Rupert in command of the troops that were besieging Plymouth, and it was mainly by his successful tactics that Lord Essex was utterly defeated in Cornwall in 1644, when the King commanded the Cavaliers in person.