Possible Clues:

• 2016 Indy 500 champ Alexander
• Bruno ___ Prize (astrophysics award)
• Portia de ___ (Ellen DeGeneres's wife)
• Carlo ___ (wine brand)
• Racer Valentino
• Architect/designer Aldo
• Martini accompanier?
• Theo of "Sons of Anarchy"
• Theo of 'Sons of Anarchy'
• 'Orfeo' composer Luigi