Lethlobar mac Echach (died 709) was a Dal nAraide king of the Cruithne in Ulaid (Ulster). He was the son of Eochaid Iarlaithe mac Lurgain (died 666), a previous king.[1] He belonged to the main ruling dynasty of the Dal nAraide known as the Uí Chóelbad based in Mag Line, east of Antrim town in modern county Antrim. He ruled from 708 to 709.
He succeeded to the throne upon the assassination of Cú Chuarán mac Dúngail Eilni (died 708) of the Eine branch of the family in 708. The annals record his death at the Battle of Dul in Mag Eilne (between the Bush and the Bann in modern County Antrim).[2] The victors are not named, one possibility is the Dal Fiatach who had just acquired the kingship of Ulaid.[3]
Lethlobar's daughter Barrdub was said to be a wife of Bécc Bairrche mac Blathmaic (died 718) a Dal Fiatach King of Ulaid.[4] His son Indrechtach mac Lethlobair (died 741) was a King of Dal nAraidi.