Possible Clues:

• Egyptian ruler; Greek astronomer
• Old geographer - around England's capital my plot is wrong
• Ancient Egyptian ruler
• Astronomer royal: the French setter's on the next page
• Ancient astronomer who wrote the "Almagest"
• Egyptian king or astronomer
• Astronomer contrived to employ with nothing lost
• Greek astronomer; Greco-Egyptian ruler
• See next page - setter's after the French astronomer
• Employ model that's wrong - his didn't involve 4