I. The Amnesty of March 17th, and the Con firmation of Caesar's Acts. Caesar had been assas sinated on the morning of March 1sth. In Rome his death made as it were a great void. The senate ?ed in terror. Caesar's colleague in the consulship, Marcus Antonius, shut himself up in his house fearing lest the conspirators intended that he should share the fate of his friend. The conspirators threw themselves into the Capitol and fortified themselves there. During the whole of March 1sth the city was left entirely to itself.