Restitutus is an inconspicuous man of medium size with greying hair and increasing presbyopia, so that he prefers to request the services of a slave to read to him aloud. Though fully Romanised, he is still fluently speaking the language of his ancestors from the Mattiaci tribe. He treats his slaves with distance rather than harshness and feels that his household does not quite pay him the respect that his position as pater familias demanded, but he is lacking the energy to change anything about it. His profound dislike of children is persistently ignored by little Belsia Valeriana from the neighbourhood who trespasses his property at will, sometimes so that he trips over her.
C. Iulius Restitutus is an historical character. According to an inscription kept in the museum of Wiesbaden, he has been curator of a temple dedicated to Sirona, a Celtic deity equated with Diana, goddess of the Moon.