I first came across this proverb about Sejanus whilst researching the 17th century. The name was applied to both the Duke of Buckingham and Cardinal Mazarin to denote Extremely Powerful Men who obtained their fame and fortune through dubious means.

There seems to be some confusion over the name though. Does it refer to the Roman soldier Sejanus or to his horse?

The family were originally Seia gens

Quite lowly and unimportant.

Anyway – the name Sejanus has been an insult for centuries when used to call out a person who usurps the reins of power.

Pun Intended :o)

Roman, English, French History, Botany with a bit of English Literature thrown in.

Could Do Better, GB!