CIMABUE (Cenni di Pepi, c. 1240-1308) was a Tuscan painter, active in the second half of the 13th century. He is considered a pioneer for breaking with the Byzantine practices of his day in favor of greater naturalism in the depiction of human figures, in particular. His most interesting work visible in Florence is the large Crucifix at Santa Croce (damaged during the 1966 flood).
Much in demand in his lifetime, his fame was soon eclipsed—if what Dante wrote is true—probably while he was still active, by Giotto di Bodone (c.1267-1337):
O vanity of human powers,
how briefly lasts the crowning green of glory,
unless an age of darkness follows!
In painting Cimabue thought he held the field
but now it's Giotto has the cry,
so that the other's fame is dimmed.
Dante Alighieri, Purgatory XI, 91-96.