Lugaid mac Con Roí

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:See Lugaid for other figures of the same name, and Lug for the god the name derives from.

In the Ulster Cycle of Irish mythology, Lugaid mac Con Roí was the son of Cú Roí mac Dáire.{{Cite web |title=MS A 13 (Annals of the Four Masters) (University College Dublin) |url=https://www.isos.dias.ie/UCD/UCD_MS_A_13.html#11 |access-date=2023-09-02 |website=ISOS |language=en}} He was also known as Lugaid mac Trí Con{{Cite book |last=O'Curry |first=Eugene |url=http://archive.org/details/lecturesonmanusc00ocur |title=Lectures on the manuscript materials of ancient Irish history : delivered at the Catholic University of Ireland, during the sessions of 1855 and 1856 |date=1878 |publisher=Dublin : William A. Hinch |others=Boston College Libraries}} ("son of three hounds").

He avenged his father's death by killing Cúchulainn after conspiring with Medb and the children of other people Cúchulainn had killed.

After Lugaid's spear had spilled out his innards, Cúchulainn tied himself to a standing stone (traditionally said to be Clochafarmore{{cite web|url=http://www.voicesfromthedawn.com/clochafarmore-stone/|title=Clochafarmore Standing Stone |website= Voices from the Dawn|date=25 August 2010 |access-date=1 May 2017}}) so he could die standing up. Only when a raven landed on his shoulder was Lugaid convinced he was dead.{{Cite web |title=Cú Chulainn |url=http://www.irishstones.org/place.aspx?p=1 |access-date=2023-09-02 |website=www.irishstones.org}} As Lugaid cut off his head, Cúchulainn's sword fell from his hand and cut off Lugaid's hand.{{Cite web |title=The Death of Cu Chulainn |url=https://www.ancienttexts.org/library/celtic/ctexts/cuchulain3.html |access-date=2023-09-02 |website=www.ancienttexts.org}}

Conall Cernach pursued him.{{Cite web |title=Lugaid mac Con Roí |url=https://www.oxfordreference.com/display/10.1093/oi/authority.20110803100118288 |access-date=2023-09-02 |website=Oxford Reference |language=en }} As Lugaid had lost a hand, Conall fought him with one hand tucked into his belt, but he only won when his horse took a bite out of Lugaid's side. He took Lugaid's head and set it on a stone, but his blood melted the stone and the head sank right through it.{{Cite web |date=2023-08-08 |title=Does Irish Mythology Prove That Cú Chulainn Was a Comet? [Cosmic Cú Chulainn Part 4] |url=https://irishmyths.com/2023/08/08/irish-mythology-cu-chulainn-comet/ |access-date=2023-09-02 |website=IrishMyths |language=en}}