Possible Clues:

• One of 9 could be a help backing another one?
• Renaissance painter
• Artist from Praha forged article of Picasso?
• Ninja turtle named after the 'Transfiguration' painter
• A harp being played by the Spanish artist
• Michelangelo contemporary
• Artist getting help, a struggling Italian painter
• Italian Renaissance painter, d. 1520
• "Sistine Madonna" artist
• 'Madonna of the Pinks' artist