Dr. Comerford's entry on the Parish of Kilcock begins thus:
"Derives its name from St. Coca, virgin, whose chief feast was celebrated on the 6th of June. We find her name calendared in the Martyrology of Donegal also, at the 8th January: "Cuach, virgin, of Cil-Cuaigh in Cairbre na Ciardha;" and again, in the same, under date April 29th : "Coningen, i. Cuach i. Ci Finn Maighi." A gloss on this passage states that the maiden Coinengean, or Cuach, was the pupil or Daltha of Mac Tail, Bishop of Kilcullen. She is stated to have been sister of St. Kevin of Glendalough, of St. Attracta, and other saints. (See Loca Patr.,p. 150.note.) Colgan, it should be added, considers that this was a different person from the Patron Saint of Kilcock. In the life of St. Ciaran of Saighir, it is stated that "he used to go to the sea rock that was far distant in the sea (where his nurse, i,e., Coca, was), without ship or boat, and used to return again." St. Coca was identified with this locality from a very early date... The Holy Well of the Saint, called Tubbermohocca, stood in what is now an enclosed yard in the town."
The well of St. Coca, which appears to have been in the yard of what was the Christian Brothers' Monastery in the Square, seems to have been covered over some time in the nineteenth century.
Tradition has it that St. Coca embroidered vestments for Saint Colmcille.
St. Coca of Kilcock, pray for us!