Maghnus Mág Samhradháin

Maghnus Mág Samhradháin, the First, (anglicised Manus McGovern) was chief of the McGovern Clan and Baron or Lord of Tullyhaw barony, County Cavan from 1294 until his murder in 1299.

His ancestry was Maghnus mac Donnchadh ‘Cime’ Mág Samhradháin (d. 1269) mac Giolla na Naomh Mág Samhradháin (the Second) (d. 1255) mac Giolla Íosa Mág Samhradháin (d. 1231) mac Giolla na Naomh Mág Samhradháin, the First (fl. 1170) mac Muireadhach Mág Samhradhán (fl. 1130) mac Samhradhán (fl. 1100), who were all previous chiefs of the clan. His mother was May Mór O’Ruairc, the daughter of Amlaíb O'Ruairc, king of West Breifne from 1257–1258. His brothers included Brian ‘Breaghach’ Mág Samhradháin (whom he succeeded as chieftain) and Macraith Mág Samhradháin, the ancestor of two McGovern bishops (Cormac Mác Shamhradháin of Ardagh and Cormac Mág Shamhradháin of Kilmore).

On the death of his brother Brian ‘Breaghach’ Mág Samhradháin on 3 May 1294, Maghnus took the chieftaincy and moved to Coologe castle. He must have been involved in a conflict five years later as he was killed in 1299.

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