What happened March 161 AD

Antoninus was already ill; he died on 7 March.

Marcus was effectively the sole ruler of the Empire. The formalities of the position would follow. The senate would soon grant him the name Augustus and the title imperator, and he would soon be formally elected as Pontifex Maximus, chief priest of the official cults. Marcus made some show of resistance: the biographer writes that he was 'compelled' to take imperial power.