D
Diana
Cartilia Poplicola, known as Diana, the sister of Paula and friend of Flavia. She is in love with Aristo and hates Miriam, whom she mistakenly calls 'Melania'. Despite their differences, Diana attends Miriam's funeral. She calls herself 'Diana' after the goddess, as she decides never to get married and she is a keen hunter. In The Beggar of Volubilis she persuades Flavia to join her in taking a vow to the goddess Diana to renounce men.
Dion
Dion is Aristo's yonger brother. He appears in the 'The Fugitive from Corinth'. Dion wanted to kill Aristo but accidentally stabs Flavia's father. Dion thinks that he killed Aristo, also thinking that Aristo's ghost is chasing him. At the end of the book Dion falls in love with Megara.
Domitian
Titus Flavius Domitianus is the Emperor Titus's younger brother. Not much is given of him personally except for his appearance. He is described as good looking, medium height, with curly brown hair and brown eyes. He is quite arrogant; "I'm an excellent archer" and he hates his brother Titus; "She had seen the look of pure hatred in his eyes when he looked at Titus"...
Read more about this topic: List Of The Roman Mysteries Characters