More Brewer.
Sagan of Jerusalem in Dryden's Absalom and Achitophel, is designed for Dr. Compton, Bishop of
London; he was son of the Earl of Northampton, who fell in the royal cause at the battle of Hopton
Heath. The Jewish sagan was the vicar of the sovereign pontiff. According to tradition, Moses was
Aaron's sagan.

So, whose vicar was Carl Sagan?