I know what I want to say (and here it is):
"Whilst Cleopatra was Egyptian, Plutarch would nevertheless have regarded such behaviour as louche and unacceptable. Writing some three hundred years after events, Plutarch?s evidence for Cleopatra?s alleged drinking and gaming is questionable, but all the more telling (of his prejudices) that he conjectured this was so."
Is it proper English like to say "that he conjectured...."?
Thanks....