Related Clues:

• No ordeal can upset this genius
• Artist, architect, and engineer putting sign outside on a road
• Artist becoming fat and round having been around long time
• Da Vinci's first name
• Mathematician Fibonacci
• -- Fibonacci, Italian who popularised the decimal system in Europe
• da Vinci
• 'The Virgin of the Rocks' painter
• and 12 Across: Renaissance genius
• -- da Vinci
• One badly taken in by fat old Italian painter
• Kate's "Titanic" costar
• Artist in comeback managed act with lion
• One of the Teenage Mutant Ninja Turtles
• "Titanic" Jack