Cuanna (or Cuanda) is the name of several early Irish saints:
1. Abbot of Killchuanna (nhw Kilcoona, in Galway) and Lismore, celebrated February 4, is said to have been born at the close of the 6th century, his mother being Meda (Finmeda or Conmania), daughter of Fingen, and his father unknown, while his brother was St. Carthach of Rahen. Many-miracles are related of him, and he died about 650. See Colgan, Acta Sanctorinm, page 249 sq.
2. Son of Miodhavn of Rosco, celebrated April 10, is of obscure and confused history, but seems to have died in 721. See Forbes, Scott. Saints, page 10; Kelly, Irish Saints, 21.
3. Surnamed "the Blind;" celebrated March 11, is thought to have been the son of Tulan, and is said to have been miraculously taught music by St. Patrick.