After the lapse of four years, Lord Herbert again married, taking to wife the Lady Margaret, second daughter of the Earl of Thomond. In the year after his second marriage, the celebrated Long Parliament began its sittings. Questions of great public import were agitating the minds of thinking men, and the nation was gradually becoming divided into two hostile parties, soon to be arrayed against each other in deadly strife. A Royalist and a Roman Catholic like his father, Lord Herbert at once ranged himself on the side of the King. On the outbreak of the Civil War, we find both father and son actively employed in mustering forces, and preparing to hold the western counties against the Parliament. Raglan Castle was strongly garrisoned, and fortifications were thrown up around it, so as to render it secure against assault. The Earl, now Marquis of Worcester, was appointed Generalissimo of the Western Forces, while his son, Lord Herbert, was made General of South Wales. From this office he was shortly after called by the King, who, creating him Earl of Glamorgan, despatched him on a mission to Ireland, with the object of stirring up the loyalists of that kingdom, and inducing them to come to his help. This delicate office he is said to have performed with more zeal than discretion. Indeed, the studious habits of his early life must in a measure have unfitted him for the conduct of so important an affair; and the bungle he made of it was such that the King felt himself under the necessity of repudiating the acts which the Earl had done in his name.