A factor in the delay was probably Donatello's travelling, which increased from about 1430, after a long period of steady work and residence in Florence after his return from Rome in about 1404. In 1430 he worked with Brunelleschi at Lucca on the construction of a defensive dyke and wall, and later in the year visited Pisa, Lucca again and finished the year in Rome, where he spent much of his time until 1433. Some of this travel was to see antiquities, and political difficulties had greatly reduced the flow of commissions in Florence.Coonin, 105-106.
a factor in the delay was probably donatello's travelling which increased from about 1430 after a long period of steady work and residence in florence after his return from rome in about 1404 in 1430 he worked with brunelleschi at lucca on the construction of a defensive dyke and wall and later in the year visited pisa lucca again and finished the year in rome where he spent much of his time until 1433 some of this travel was to see antiquities and political difficulties had greatly reduced the flow of commissions in florencecoonin 105-106