(Lat. Cathubius). There are two saints of this name commemorated in the Irish martyrologies on July 1 and Sept. 16. It is said-that when St. Patrick first came into the north-east of Ireland, he built, among other churches, one in the country belonging to the descendants of Engus, over which he placed two disciples, Cathbadius, a priest, and Dimanus, a monk. The former is perhaps the Cathubius, son of Fergus, abbot of Achadh-cinn, who, according to the Four Masters, died in 554, aged one hundred and fifty years. See Colgan, Tr. Thaum. p. 146, etc.; Lanigan, Eccles. Hist. Ir. 1, 267, 2, 103.