Possible Clues:

• Against carrying on, old Twelfth Night character
• Violinmaker Stradivari
• A crazy notion he had to woo Portia
• Banderas of 'Evita'
• Revolutionary topped by 10, one of several in 14
• For whose benefit 'the quality of mercy is not strain'd' in Shakespeare
• A notion to be cast as the Merchant of Venice
• -- Salieri, Italian composer 1750-1825
• He's gone away with one insect on ten more
• Client of Shylock