Giotto
From Rome, Giotto's teacher Cimabue went to Assisi to paint several large frescoes at the "Upper Church" of the newly built Basilica of St. Francis of Assisi. Through the 19th century,and for much of the 20th century it was believed that Giotto had also painted a famous series of frescos in the "Upper Church". These pictures show the "Life of St. Francis". From 1912, some art historians who studied these frescos more closely, decided that they were the work of several different artists (probably four), probably from Rome, and that probably none of the pictures were by Giotto. Nowadays, most art historians agree with this, but some books and some websites continue to say that these paintings are by Giotto. All the papers that belonged to the monastery were destroyed by Napoleon's soldiers, so there is no record of which artist was paid to do the job.