Saint Derchairthinn or Tarcairteann (fl 6th century) is venerated as a prioress and saint of the monastery of Oughter Ard in Ardclough, County Kildare. Her feast day is March 8. Lineage She was said to be “of the race of Colla Uais, Monarch of Érinn”. References External links Kildare heritage 6th-century Irish abbots Medieval Irish saints Medieval saints of Leinster 6th-century Irish nuns Irish Roman Catholic abbesses Irish folklore 6th-century Christian saints Female saints of medieval Ireland