Matthew Poole and continuators on Revelation 8:11

11 And the name of the star is called Wormwood , and the third part of the waters became wormwood; and many men died of the waters because they were made bitter .

His Doctrine was as bitter as Wormwood;

Marginal references: and he was the Ruine of many Souls: But if any do rather chuse to understand it of a Political-Star, Mr. Mede's Notion bids as fair for the Sense as any, because the Western Empire determined in Augustulus, and he reigned but a very short time▪ and he was a Prince of many Sorrows and Afflictions, and many perished with him in those Sorrows and Afflictions, which he underwent. Whether we understand it of some eminent Political Magistrate (such was Augustulus); or some eminent Light in the Church (such was Pelagius); they both fell about this time, the one from his terrene Dignity, the other spiritually from the Honour he had in the Church; and many fell with them, either in a civil, or in a spiritual Sense.