 <unk> ( Latin : Marcus <unk> <unk> Caesar Augustus ; 8 November , 30 AD – 27 January , 98 AD ) was Roman Emperor from 96 to 98 . <unk> became Emperor at the age of sixty @-@ five , after a lifetime of imperial service under <unk> and the rulers of the <unk> dynasty . Under <unk> , he was a member of the imperial entourage and played a vital part in exposing the <unk> conspiracy of 65 . Later , as a loyalist to the <unk> , he attained <unk> in 71 and 90 during the <unk> of <unk> and <unk> respectively . 
