[3][4] The Tanist of Tír Conaill, Sir Domhnall's younger half-brother and Iníon Dubh's son, Red Hugh O'Donnell, was still imprisoned in Dublin Castle, but later rose following a subsequent escape to lead Clan O'Donnell and was a prominent figure during the Nine Years War.
It was a cause of great anguish and sickness of mind to Ineenduv, the daughter of James Mac Donnell, that Donnell should make such an attempt, lest he might attain the chieftainship of Tirconnell in preference to her son, Hugh Roe, who was confined in Dublin, and who she hoped would become chief, whatever time God might permit him to return from his captivity; and she, therefore, assembled all the Kinel-Connell who were obedient to her husband, namely, O'Doherty, with his forces; Mac Sweeny-na dTuath (Owen Oge), with his forces; and Mac Sweeny Fanad, with his forces; with a great number of Scots along with them.
After Donnell O'Donnell had received intelligence that this muster had been made to oppose him, he assembled his forces to meet them.
The place where the son of O'Donnell happened to be stationed along with these chieftains was Doire-leathan at the extremity of Tir-Boghaine, to the west of Gleann Choluim Cille.
The Scots discharged a shower of arrows from their elastic bows, by which they pierced and wounded great numbers, and, among the rest, the son of O'Donnell himself, who, being unable to display prowess or defend himself, was slain at Doire-leathan, on one side of the harbour of Telinn, on the 14th of September.