Lionardo entered young into the service of the Gonzaga family of Milan, being, according to one statement, chosen for the office which he was to fill, as the first singer in _improvisatore_ of his time (among his other inventions he devised a peculiar kind of lyre). He showed no want of confidence in asserting his claims to be elected, for after declaring the various works he would undertake, he added with regard to painting--'I can do what can be done, as well as any man, be he who he may.' He received from the Duke a salary of five hundred crowns a year. He was fourteen years at the court of Milan, where, among other works, he painted his 'Cenacolo,' or 'Last Supper,' one of the grandest pictures ever produced. He painted it, contrary to the usual practice, in oils upon the plastered walls of the refectory of the Dominican convent, Milan. The situation was damp, and the material used proved so unsuitable for work on plaster, that, even before it was exposed to the reverses which in the course of a French occupation of Milan converted the refectory into a stable, the colours had altogether faded, and the very substance of the picture was crumbling into ruin.
The equestrian statue of the old Duke of Milan by Lionardo excited so much delight in its first freshness, that it was carried in triumph through the city, and during the progress it was accidentally broken. Lionardo began another, but funds failed for its completion, and afterwards the French used the original clay model as a target for their bowmen.
Lionardo returned to Florence, and found his great rival, Michael Angelo, already in the field. Both of the men, conscious of mighty gifts, were intolerant of rivalry. To Lionardo especially, as being much the elder man, the originator and promoter of many of the new views in art which his opponent had adopted, the competition was very distasteful, and to Michael Angelo he used the bitter sarcasm which has been handed down to us, 'I was famous before you were born.'
Nevertheless Lionardo consented to compete with Michael Angelo for the painting in fresco of one side of the council-hall, by the order of the gonfaloniere for the year. Lionardo chose for his subject a victory of the Florentines over the Milanese, while Michael Angelo took a scene from the Pisan campaigns. Not only was the work never done (some say partly because Lionardo _would_ delay in order to make experiments in oils) on account of political troubles, but the very cartoons of the two masters, which all the artists of the day flocked to see, have been broken up, dispersed, and lost; and of one only, that of Michael Angelo, a small copy remains, while but a fragment from Lionardo's was preserved in a copy made by Rubens.