Nothing absolutely certain is known of his history, as his earliest “Life”, written in the eleventh century, has no historical value whatever. According to this extraordinary legend, Leonard belonged to a noble Frankish family of the time of King Clovis, and St. Remy of Reims was his godfather. After having secured from the king the release of a great number of prisoners, and refused episcopal honours which Clovis offered him, he entered a monastery at Micy near Orleans. Later he went to Aquitaine and there preached the Gospel. Having obtained, through prayer, a safe delivery for the Queen of the Franks in her confinement, he received as a gift from the king a domain at Noblac, near Limoges, where he founded a monastery. The veneration of this saint is as widely known as his history is obscure and uncertain. It is true that there is no trace of it before the eleventh century, but from that time it spread everywhere, and little by little churches were dedicated to him, not only in France, but in all Western Europe, especially in England, Belgium, Spain, Italy, Switzerland, Germany, more particularly in Bavaria, and also in Bohemia, Poland, and other countries. Pilgrims, among them kings, princes, and high dignitaries of the Church, flocked to Noblac (now St. Leonard). Numerous miracles are attributed to him, and in one small town alone, Inchenhofen, Bavaria, from the fourteenth to the eighteenth century, there are records of about 4000 favours granted through his intercession. The saint wrought the delivery of captives, women in confinement, those possessed of an evil spirit, people and beasts afflicted with diseases. At the end of the eleventh century his name had already become renowned among the Crusaders captured by the Mussulmans. He is generally represented holding chains in his hands. His feast day is celebrated on 6 November.

St. Malachy, whose family name was O’Morgair, was born in Armagh in 1094. St. Bernard describes him as of noble birth. He was baptized Maelmhaedhoc (a name which has been Latinized as Malachy) and was trained under Imhar O’Hagan, subsequently Abbot of Armagh.

After a long course of studies he was ordained priest by St. Cellach (Celsus) in 1119. In order to perfect himself in sacred liturgy and theology, he proceeded to Lismore, where he spent nearly two years under St. Malchus. He was then chosen Abbot of Bangor, in 1123. A year later, he was consecrated Bishop of Connor, and, in 1132, he was promoted to the primacy of Armagh. St. Bernard gives us many interesting anecdotes regarding St. Malachy, and highly praises his zeal for religion both in Connor and Armagh. In 1127 he paid a second visit to Lismore and acted for a time as confessor to Cormac MacCarthy, Prince of Desmond. While Bishop of Connor he continued to reside at Bangor, and when some of the native princes sacked Connor, he brought the Bangor monks to Iveragh, County Kerry, where they were welcomed by King Cormac. On the death of St. Celsus (who was buried at Lismore in 1129), St. Malachy was appointed Archbishop of Armagh, 1132, which dignity he accepted with great reluctance. Owing to intrigues, he was unable to take possession of his see for two years; even then he had to purchase the Bachal Isu (Staff of Jesus) from Niall, the usurping lay-primate.

During three years at Armagh, as St. Bernard writes, St. Malachy restored the discipline of the Church, grown lax during the intruded rule of a series of lay-abbots, and had the Roman Liturgy adopted. St. Bernard continues: Having extirpated barbarism and re-established Christian morals, seeing all things tranquil he began to think of his own peace. He therefore resigned Armagh, in 1138, and returned to Connor, dividing the see into Down and Connor, retaining the former. He founded a priory of Austin Canons at Downpatrick, and was unceasing in his episcopal labours. Early in 1139 he journeyed to Rome, via Scotland, England, and France, visiting St. Bernard at Clairvaux. He petitioned Pope Innocent for palliums for the Sees of Armagh and Cashel, and was appointed legate for Ireland. On his return visit to Clairvaux he obtained five monks for a foundation in Ireland, under Chirstian, an Irishman, as superior: thus arose the great Abbey of Mellifont in 1142. St. Malachy set out on a second journey to Rome in 1148, but on arriving at Clairvaux he fell sick, and died in the arms of St. Bernard, on 2 November. Numerous miracles are recorded of him, and he was also endowed with the gift of prophecy. St. Malachy was canonized by Pope Clement (III), on 6 July, 1199, and his feast is celebrated on 3 November, in order not to clash with the Feast of All Souls.