Hadrian's succession was the most natural one, even if the tradition, wondering why Trajan could not bring himself to nominate an heir until the last moment, thought it discerned in him signs of an invincible distrust of the qualities of the man who was nevertheless his nearest relative and had been for years his closest collaborator. The ten-year-old boy, left with a sister possibly older than himself and also called Domitia Paulina, who subsequently married the illustrious senator Lucius Julius Ursus Servianus, had as guardians the future emperor Trajan, then of praetorian rank, and the knight Publius Acilius Attianus, the future praetorian prefect. Works of public utility were distributed everywhere; some, such as the monumental buildings in Athens and Asia, have already been mentioned in the section on Hadrian's journeys, and the great activity in Rome and its surroundings will be discussed separately. But Hadrian's plans for the succession were not limited to naming his immediate heir.