E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Jebusites (3 syl.),
in Drydens satire of Absalóm and Achitophel, stands for the Roman Catholics; so called because England was Roman Catholic before the Reformation, and Jerusalem was called Jebus before the time of David.
In this poem, the Jebusites are the Catholics, and the Levites the dissenting clergy: