Possible Clues:

• Sandwich or leotard, e.g.
• Amerigo Vespucci, vis-Г -vis America
• The writer's getting upset about horse -- Black Beauty, say
• Rob Roy or Shirley Temple
• Ohm or joule
• Emma is one English maiden stabling horse
• Hamlet or Macbeth extended play, adding nothing with an associate of Falstaff
• General Shrapnel or Burnside
• Jim Beam or Jack Daniel
• Euclid, vis-Г -vis geometry