The avenging of Caesar fell to his adopted son who assumed the title of Divi filius as consecration for the ruler of Rome. […] Brutus wrote a book with the title De officiis (Seneca, Epp. 95, 45). […] At this favourable moment an unknown agent was instigated to prosecute Balbus, impugning his title to the Roman citizenship. […] Poppaedius Silo, and the earliest official title of the War, Bellum Marsicum. […] Further, the official deification of his adoptive parent soon provided the title of ‘Divi Julii filius’; and from 38 B.C.