Possible Clues:

• Ancient dynasty name
• Name of two kings of Egypt between 323 and 246 BC
• Temperature taken by measurement with voided mercury ruler
• Macedonian general, dismissing soldiers from employment, shot
• Second-century astronomer
• Cataloger of the 'original 48' constellations
• Old astronomer finds temperature in arctic region? Gosh!
• Ancient General Staff dismissed from employment, insane!
• Revolutionary thinker?
• Authority often consulted by Christopher Columbus