@_Twilight_Moon_ Hugo is not Damien's father. The father is Hugo's BROTHER. Why are you stating that Hugo is Damien's biological father? And the name of the brother isnt hue/hueg because his name was not even mentioned in the story, he is just reffered as Hugo's twin brother. Hugo's other name are Hue/Hueg/Hugo/Hugh.
@Enokipp gurly~ you should re-read chapter 20 & 29.......in chapter 29 both brothers sitting on field or garden or wherever it is, the twin brother who died ask the other twin his name {current duke} and he said his name is "Hiu" which means'devil or demon' while Hugo {who died} introduce himself as "HUGO" so it's 'Hugo' who's Damien's biological father and fyi the current duke himself kind of said that he took 'Hugo'-s identity after he killed himself and became the duke also in chapter 20 vivian call duke as "Hue" so the dukes name is "Hiu/Hue/Hueg" seems like you didn't really focus at the characters and their information 🙂
{before coming to me again re-read this chapters and if I'm still wrong then sorry but if not then it's totally fine 👍🏻}