FERRITER'S CASTLE.The English Invasion—Dermod's Interview with Henry II.—Henry grants Letters-patent—Dermod obtains the assistance of Strongbow, Earl de Clare—He returns to Ireland—Arrival of English Forces under FitzStephen—Fatal Indifference of Roderic, the Irish Monarch—He is at last roused to action, but acknowledges Dermod's Authority almost without a Struggle—Strongbow's Genealogy—He obtains a Tacit Permission to invade Ireland—His Arrival in Ireland—Marriage of Strongbow and Eva—Death of Dermod Mac Murrough—Strongbow proclaims himself King of Leinster—Difficulties of his Position—Siege of Dublin—Strongbow's Retreat—He returns to England.CHAPTER XVI.