The people that lived in this province, also called the Ulaid, are claimed as being descended from the Clanna Rudraige and in medieval texts are often referred to by that name.
An alternate spelling found in medieval texts is Clan na Rudraige, which would lean towards the latter.
[6] The origins and background of the Clanna Rudraige comes from medieval texts, most of which combined myth, pseudo-history and possible real events into an elaborate and largely fabricated legendary history.
[7] Fergus' cousin Conchobar mac Nessa was king of Ulaid during the Ulster Cycle of Irish mythology.
The Collas burnt Emain Macha, the capital of Ulaid, after which it was abandoned, and seized substantial territories in mid-Ulster.