
Me too, but I think I've figured it out.
MC's grandfather, Pascal, the former emperor had one daughter, MC's mother, Elenia. The mother didn't want to take the throne but marry for love. She married MC's father,Gaius, and they had MC, Appolonia.
So the imperial family consists of Grandfather, Mother and MC.
Not sure about the timeline but MC's father had a lover, Arietta. Together they had a son, Paris, MC's half brother. The lover died. The father thinks it was the grandfather who killed her.
The mother toke the son in and raised him as her own.
Now the father is emperor. He has a sister, Petra Lipper, MC's aunt. The aunt has a son, Gareth or something. He is the little Duke or young Duke, aka the rapist. Their family name is Lipper.
Hope I could help
Am I the only one confused and about the bloodline/family tree and the names