Possible Clues:

• That 's what is coming at the double from Egypt
• Are, perhaps, old and godly
• Si, si - an Egyptian goddess
• A goddess in Egyptian mythology
• Second crew's existence doubly confirmed
• Goddess with the gift of life
• 'Are, perhaps, so godlike at Oxford (4)'
• Goddess was present more than once
• From Egypt to Oxford perhaps are
• Is first and last a course at Oxford