Possible Clues:

• Assorted pages on American horse that's legendary
• Perseus' horse
• Constellation in the northern sky, named after the winged horse of Greek mythology
• Mythical horse with wings
• He sprang from the blood of Medusa
• Fish harpoon used by a South American
• Winged horse in Winnipeg as usual
• In drink, elder knocked over, seeing stars
• In Greek mythology, a winged horse that sprang from the blood of Medusa
• Northern hemisphere constellation — use gaps (anag)