23 September -- St Adamnan of Raphoe and Iona

Today is the feast of the 7th century Irish/Scottish saint and 9th Abbot of Iona, St Adamnan.  Grattan Flood in the good old Catholic Encyclopædia gives a brief life here.  It seems he was not only abbot of Iona but a sort of Abbot General of all the Columban houses in Ireland.  As a canonist he is said to be responsible for 

"the Cain Adamnain, or Canon of Adamnan . . . which freed women and children from the evils inseparable from war, forbidding them to be killed or made captive in times of strife."

It doesn't say what he thought about making them Army Rangers.

Marcella in her comprehensive Omnium Sanctorum Hiberniæ gives a little vignette from his life as a poor student here.