“ As regards the general course of the war the importance of the successful resistance at Londonderry can hardly be exaggerated. It was the first open act of hostility in Ireland against James, and the disaster to his arms not only embarrassed his campaign in Ireland but prevented the expeditions to Scotland and England, and Walker's share in it was abundantly recognized. ”

“ At the outbreak of the Civil War in Ireland towards the close of 1688, Walker, though in Holy Orders and advanced in years, raised a regiment and endeavoured to concert measures with Robert Lundy, the acting governor of Londonderry, for the defence of Dungannon. But Lundy, after having sent some troops to his support, ordered their withdrawal and the abandonment of the place on the 14th of March 1689. On the 17th of March Walker marched with his men to Strabane, and subsequently was ordered by Lundy to move to Rash and then to St Johnstown, 5 m. ”