Cyclopedia of Biblical, Theological and Ecclesiastical Literature
was the name of two Irish virgin saints in the 7th and 8th centuries:
1. COINCHENN OF CAEL-ACHADH is commemorated August 20. Her monastery was probably at Killeigh, King’s County, and she died about A.D. 743, according to the Irish annals (Colgan, Acta Sanctorua, page 607).
2. COINCHENN, THE DEVOUT, flourished, according to Colgan, in Ulster, in the beginning of the 7th century. She became abbess of Cill- Sleibhe, and died in 654. She is commemorated on March 13 (Lanigan, Eccl. Hist. of Irelandi, 1:38 sq.; O’Donovan, Four Masters, 1:168 n., 267).