While Ormonde was reducing the rebellious O'Briens, Lord President Fitton was practically shut up in Galway, and Sidney sent a force under Basnet and Collyer to relieve him. With their help and with that of Clanricarde he was able to besiege Shrule Castle, the key of Lower Connaught; but Shane MacOliver Burke, claiming to be MacWilliam Iochtar, collected the youth of Mayo and Connemara, and attacked Fitton's camp with great determination. He had also some Scots mercenaries. 'They resolved that if the son or kinsman of one of them should be slain, they would not stop with him, but pass over him at once.' The President's Irish and Scotch auxiliaries were driven in, and the Burkes chased them for two miles, when the English cavalry, who had remained in reserve, turned the tide by charging them in the rear. Both sides claimed a victory, but the success was Fitton's. The Burkes retired, and the castle which they had come to relieve was at once taken. [Sidenote: A chieftain's dilemma.] Though badly supported by his followers, Clanricarde did excellent service on this occasion, but Sidney was unable to feed or arm a large force, and the victory could not be practically followed up. Fitton could do nothing without English soldiers, and they could not be maintained without cessing the country. The people hardly knew how to choose between imposts in the Queen's name and the exactions of their own chiefs. A poor woman complained to Shane MacOliver of the intolerable burden of his Scots mercenaries, whereupon 'he fell into a study, and after some pause said openly, "I am in a miserable case. If we stand out altogether and maintain Scots for our defence, I see the destruction of the country; again, if I shall take upon me the name of MacWilliam, I shall be driven for maintenance thereof to spoil it myself, and if we shall submit ourselves to the English nation, they will be as burdensome as either MacWilliam or Scots. God give me grace to do the likest."'[189] [Sidenote: It is doubtful whether English law or Irish custom is best.]