A significant era in the
history of Ireland was the
Norman invasion of Ireland by English or
Anglo-Norman adventurers in 12th century
Gaelic Ireland. In 1166, the once powerful King of Leinster,
Dermot MacMurrough (d. 1171), was forced from Ireland by his rivals. With the consent of Henry, Mac Murchada sought the aid of Henry's vassals in Wales and England. Through his daughter
Aoife MacMurrough (
fl. 1189), Mac Murchada gained a matrimonial-alliance with the powerful
Richard de Clare, 2nd Earl of Pembroke (d. 1176). In 1167, the reinforced Mac Murchada made his return and easily regained Leinster, and later gained further lands. One of the wealthiest and coveted settlements in 12th century Ireland was
Dublin, a seaport and seat of a somewhat independent kingdom ruled by various Norse-Gaelic kings. In September 1170, the forces of Mac Murchada and de Clare marched on Dublin, which was then successfully stormed by de Clare's men. While many of the Dubliners may never have returned, Gerald's account and a mediaeval French text popularly known as
The Song of Dermot and the Earl state that, about six months later, the deposed King of Dublin,
Ascall mac Ragnaill (d. 1171), launched a sea-borne assault on the town with a force that numbered either sixty or one hundred ships respectively. Although Mac Turcaill's men successfully made landfall near the town, the sources indicate that his forces were utterly crushed by the Norman defenders, and that he was himself captured and
beheaded. The French text specifically states that there was Manx involvement in the assault. In Gerald's version of the events, Affreca's father supplied thirty ships to an unsuccessful later-attempt at ousting the Normans from Dublin. In the words of Gerald, "their fear of the threat of English domination, inspired by the successes of the English, made the men of the isles act all the more quickly, and with the wind in the northwest they immediately sailed about thirty ships full of warriors into the harbour of the
Liffey". With the conquest of Norse-Gaelic Dublin, and the ongoing entrenchment of the English in Ireland, the Crovan dynasty found themselves surrounded by a potentially threatening, rising power in the Irish Sea zone. The dynasty did not take long to realign itself with this new power, in the form of a dynastic marriage between Affreca and one of the most powerful of the incoming Englishmen—
John de Courcy (d.
c. 1219). ==Marriage to de Courcy==