12th Century
- 1101 - Battle of Grianan
- 1103 - Battle of Magh Cobha
- 1132 - Siege of Dún Béal Gallimhe
- 1149 - Siege of Dún Béal Gallimhe
- 1151 - Battle of Móin Mhór
- 1169/05 - Beginning of the Norman invasion of Ireland
- 1169/05 - Battle of Duncormac, County Wexford - Norman victory over a combined Irish-Norse force
- 1169/05 - Siege of Wexford - Norman victory over a combined Irish-Norse force
- 1169/05 - Battle of Gowran
- 1170/05 - Battle of Dundonnell (aka Battle of Baginbun), County Wexford - Norman victory over a combined Irish-Norse force
- 1170/08 - Battle of Waterford - Norman victory over a combined Irish-Norse force
- 1170/09 - Sack of Dublin - Norman victory over a combined Irish-Norse force
- 1174 - Battle of Thurles
- 1192 - Aughera
Read more about this topic: List Of Irish Battles
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“In the race for wealth, a neighbor tries to outdo his neighbor, but this strife is good for men. For the potter envies potter, and the carpenter the carpenter, and the beggar rivals the beggar, and the singer the singer.”
—Hesiod (c. 8th century B.C.)