Thus he returned to England in 1664, attired in French pantaloon breeches, and with little French affectations in his manner, but without vices, and with a smattering of patristic learning. He was sent by his father to study law at Lincoln's Inn. He was to be a courtier, and in that position it would be both becoming and convenient to have some knowledge of the law. Thus he settled down among the lawyers, and it seemed for the moment as if his father had succeeded in his purpose. It seemed as if the world had effectually obscured the other world. There are two letters, written about this time from William to his father, which show a pleasant mixture of piety with a lively interest in the life about him. He has been at sea for a few days with the admiral, and returns with dispatches to the king. "I bless God," he writes, "my heart does not in any way fail, but firmly believe that if God has called you out to battle, he will cover your head in that smoky day." He hastened on his errand, he says, to Whitehall, and arrived before the king was up; but his Majesty, learning that there was news, "earnestly skipping out of bed, came only in his gown and slippers; who, when he saw me, said, 'Oh! is't you? How is Sir William?'" That was in May. Within a week the plague came. On the 7th of June, 1665, Mr. Pepys makes this ominous entry: "This day," he says, "much against my will, I did in Drury Lane see two or three houses marked with a red cross upon the doors, and 'Lord, have mercy,' written there; which was a sad sight to me, being the first of the kind that, to my remembrance, I ever saw." Day by day the pestilence increased, and presently there was no more studying at Lincoln's Inn. Young Penn went for safety into the clean country. There, among the green fields, in the enforced leisure, with time to think, and the most sobering things to think about, his old seriousness returned. The change was so marked that his father, feeling that it were well to renew the pleasant friendship with the world which had begun in France, sent him over to Ireland. At Dublin, the Duke of Ormond, the Lord Lieutenant, was keeping a merry court. William entered heartily into its pleasures. He resided upon his father's estates, at Shannagarry Castle. He so distinguished himself in the suppression of a mutiny that Ormond offered him a commission in the army, and William was disposed to accept it. He had his portrait painted, clad in steel, with lace at his throat. His dark hair is parted in the middle, and hangs in cavalier fashion over his shoulders. He looks out of large, clear, questioning eyes; and his handsome face is strong and serious.