There came to Lyons, while its nave was building, the great Englishman, Robert Grosseteste (d. 1253), who at Lincoln made an angel-choir, "one of the loveliest of man's works," to shrine the relics of his predecessor, St. Hugh of Avalon, born in this semi-southern region. And many another enthusiast for the art of the builder studied the nave of Lyons in the course of its construction. Here gathered in 1245 a general Council of the Church. Modern congresses are sometimes dull affairs, but they must have been thrilling in the days when cathedrals were building and each prelate championed his regional ideas and yet looked about eagerly to seize on new ones. The two westernmost bays of Lyons Cathedral were finished by 1310, and then were sculptured the façade portals with hundreds of little panels as full of frolic and fancy as the marginal gaieties of illuminated missals. A few years earlier the transept doors at Rouen had made similar medallions. Vice in them was rendered hateful. Where Lot's story should have been was left a blank space. Not until Flemish realism entered French art, in the XV century, were certain gross scenes rendered. The medallions at Lyons are "Gaulois but without obscenity." From 1308 to 1332 the wide, plain west façade of St. Jean's cathedral was done. Two of the Avignon popes were crowned here in those days, Clement V, the builder of Bordeaux's choir, and John XXII. The great dukes of the west, Philippe le Hardi and his son Jean sans Peur, being hereditary canons of the cathedral, often sat in its choir stalls. Of their time is the astronomical clock in the transept. For ten years, prior to 1429, Jean Gerson lived in the old Christian city, teaching little children their catechism, and the only payment he craved was that they should pray: Lord have mercy on your poor servant Gerson. He had been worsted by his century's treachery, bloodshed, foreign rule, and church schism; but after his death Lyons revered him as a saint, and carved his device, _Sursum Corda_, on a chapel in the church of St. Paul. Scholars have decided against Gerson as author of the _Imitation of Christ_, yet during two centuries he was so believed to be, and his memory will be dear to those who have found inspiration in that precious book.