The same day, and on the same scaffold as Gerard, was executed Don Pantaleone Sa, the brother of the Portuguese Ambassador. Sa had a quarrel with this same Gerard, who was called "Generous Gerard," an enthusiastic Royalist. They came to fighting at the Royal Exchange, where Gerard, drawing his rapier, forced the Don to fly, whereupon the next day he returned to the Exchange in search of Gerard, with a body of armed followers, and mistaking a man of the name of Greenway for Gerard, they killed him, wounded Colonel Mayo, and were not subdued without much riot. Sa was seized, tried, and condemned for this deliberate murder. He pleaded that he belonged to the embassy, and was therefore exempt from the tribunals of this country, but neither this nor the zealous exertions of his brother, the ambassador, could save him; he was condemned to die. Cromwell, though on the verge of concluding a treaty with Portugal, would not concede a pardon to the bloodthirsty Portuguese, who had been found guilty by a jury of half Englishmen and half foreigners. He went to Tower Hill in a coach and six, attended by numbers of the attachés of the embassy in mourning, and his brother signed the treaty and left the country. Such an exhibition of firmness and impartiality, refusing to make any distinction in a murderer, whether noble or commoner, evinced great moral courage in Cromwell; but another execution, which took place a short time before--namely, on the 23rd of June--was not so creditable to him. This was the hanging of an old Catholic priest, named Southworth, who had been convicted thirty-seven years before, under the bloody laws of James against Popish priests, and had been banished. Being now discovered in the country, he was tried for that offence and put to death. On the scaffold he justly upbraided the Government with having taken arms for liberty, yet shedding the blood of those who differed from them on religious grounds. The stern persecution of Popery was, in fact, a blot on Cromwell's character; he had not in that respect outgrown his age.