After being ousted as King of Leinster, Diarmait had recruited the Normans to help him regain control of Leinster and the semi-independent Norse-Gaelic seaport of Wexford.
Setelah digulingkan sebagai Raja Leinster, Diarmait telah merekrut bangsa Norman untuk membantunya mendapatkan kembali kendali di Leinster dan pelabuhan semi independen Wexford.