 The early pair of paintings in the Uffizi are usually accepted.After that, things become more complicated, as exemplified by Vasari.In the first edition of the "Vite" (1550), he attributed a "Christ Carrying the Cross" to Giorgione; in the second edition completed in 1568 he ascribed authorship, variously, to Giorgione in his biography, which was printed in 1565, and to Titian in his, printed in 1567.