Note 1036 — Chapter XI · MOTTE-CASTLES IN IRELAND
Reading edition
The Annals of the Four Masters mention the building of three castles (caisteol) in Connaught in 1125, and the Annals of Ulster say that Tirlagh O’Connor built a castle (caislen) at Athlone in 1129. What the nature of these castles was it is now impossible to say, but there are no mottes at the three places mentioned in Connaught (Dunlo, Galway, and Coloony). The caislen at Athlone was not recognised by the Normans as a castle of their sort, as John built his castle on a new site, on land obtained from the church. Sweetman’s Cal., p. 80.