Benignus (in Irish, Benen) was the son of Sesenen, a chieftain in what is now County Meath. St Patrick baptised him, and he became Patrick's favourite disciple. His name was given for his gentle nature.

He went with Patrick on all his travels and helped him in his missions. His gift was music: he was known as 'Patrick's psalm-singer', helped organise the choral services, and is said to have drawn thousands to Christ with his voice. In 450 he became Patrick's coadjutor in the see of Armagh.

Tradition credits him with helping compile the Senchus Mor law code and with material for the Psalter of Cashel and the Book of Rights. He resigned in 467 and died at the end of that year. The Catholic Encyclopedia warns that he is often confused with another Benignus, of Kilbannon, a different man of the same time.

Thin entry · the 1897 book gives only 175 words. We have not filled the gap with invented detail.

In or about the year 442 S. Patrick is said to have founded a monastery at Druimlias, and to have placed over it his pupil Benignus, who, it is added, governed it twenty years. On the death of S. Patrick, about 465, Benignus was with unanimous consent of the clergy and laity raised to the see of Armagh. He had been S. Patrick's right-hand man, and he worthily succeeded him.

Date of birth unknown; d. 467, son of Sesenen, an Irish chieftain in that part of Ireland which is now County Meath. He was baptized by St. Patrick, and became his favorite disciple and his coadjutor [an assistant bishop who will succeed the current one] in the See of Armagh (450). His gentle and lovable disposition suggested the name Benen, which has been Latinized as Benignus. He followed his master in all his travels, and assisted him in his missionary labors, giving most valuable assistance in the formation of choral services. From his musical acquirements he was known as "Patrick's psalm-singer", and he drew thousands of souls to Christ by his sweet voice. St. Benignus is said not only to have assisted in compiling the great Irish code of Laws, or Senchus Mor, but also to have contributed materials for the "Psalter of Cashel", and the "Book of Rights". He was present at the famous synod which passed the canon recognizing "the See Of the Apostle Peter" as the final court of appeal in difficult cases, which canon is to be found in the Book of Armagh. St. Benignus resigned his coadjutorship in 467 and died at the close of the same year. His feast is celebrated on the 9th of November. Most authorities have identified St. Patrick's psalm-singer with the St. Benignus who founded Kilbannon, near Tuam, but it is certain, from Tirechán's collections in the Book of Armagh, that St. Benignus of Armagh and St. Benignus of Kilbannon were two distinct persons. The former is described as son of Sesenen of County Meath, whilst the latter was son of Lugni of Connaught, yet both were contemporaries. St. Benignus of Kilbannon had a famous monastery, where St. Jarlath was educated, and he also presided over Drumlease. His sister, Mathona, was Abbess of Tawney, in Tirerrill.

CAPGRAVE, Nova Legenda Angliæ (1516), fol. 36, for the oldest lives of the saint; see also HARDY, Descriptive Catalogue, etc., 1, 89; WARE-HARRIS, Antiquities of Ireland. 1, 34. II 6: O'HANLON, Lives of Irish Saints (9 November), XI; WHITLEY STOKES (ed.), Tripartite Life of St. Patrick, Rolls Series (London, 1887), in index s. v. BENÉN, BENIGNUS; Bibl. Hagiogr. Lat. (1898), 172, 1324; FORBES in Dict. of Christ. Biog., 1, 312. The very ancient Leabhar-na-gceart or Book of Rights, said to have been compiled by BENIGNUS was edited by O'DONOVAN for the Celtic Society (Dublin. 1847). BENIGNUS is also said to have been the original compiler of the Psalter of Cashel (see CASHEL).