Pepin dying in 640, the king appointed Grimoald, mayor of the palace, in his father's room. The Thuringians revolting, Sigebert reduced them to their duty; and this is the only war in which he was engaged. His munificence in founding churches and monasteries, his justice in ruling, and the private virtues of his spotless life, made him to be regarded as a model of a saintly king. After a reign of eighteen years from the date of his father's death, he died at the age of twenty-five, and was buried in the abbey of S. Martin, near Metz, which he had built. His body was found incorrupt in 1063, and in 1170 it was enshrined in a silver case. When Charles V. laid siege to Metz, Francis of Lorraine, Duke of Guise, demolished all the monasteries and other buildings in the suburbs which could give harbour to the enemy, amongst others that of S. Martin. The relics of the saintly king were then removed to the collegiate church of Our Lady, at Nancy, where they repose in a magnificent shrine. S. JOHN OF THE GRATE, B. C. (A.D. 1163.) [His festival is observed as a double by the Church of S. Malo, in Brittany. His name is inserted in Saussaye's supplement to the Gallican Martyrology. Authorities:--The letters of S. Bernard and Nicolas of Clairvaux.] The illustrious prelate S. John, commonly called "Of the Grate," because of an iron grating which surrounded his sepulchre, was a Breton, the son of parents in a middle class of life. He was born about the year 1098; and from an early age gave indications of piety. In the schools to which he was sent, in a short time he made rapid progress. Peter, abbot of Celle, speaking of him, calls him "the holy bishop, faithful servant of God, a man of courage, loving poverty, a brilliant light, dissipating the densest darkness." His life, as a bishop, was spent in a series of lawsuits with the monks of Marmoutiers. His episcopal seat was at Aleth on the main land, but he desired to transfer it to the island of Aaron, now called S. Malo, on account of the peril to which Aleth was exposed through pirates, and the intestine wars which devastated Brittany. He claimed the island as belonging to the episcopal property of Aleth, but was opposed by the monks of Marmoutiers, who claimed the Church of S. Malo. The case was referred to the Pope, who ordered a commission of French bishops to try the case, and they decided against John. He considered that his cause had been prejudged by them, and visited Rome to carry his appeal in person to the Pope. But Lucius II. would not listen to him, and he was condemned to lose his see. He then retired under the protection of S. Bernard, to Clairvaux, till, on the decease of Lucius II., a monk of Clairvaux was elevated to the papal throne, under the title of Eugenius III. John at once appealed again, and was heard; a fresh commission was appointed, and he was restored to all his rights, and the monks of Marmoutiers were obliged to cede the Church of S. Malo to the bishop.