
Fr??? Idk why I feel like I remember him being the elder brother's son because otherwise he would have been in line for throne before jacob since jacob is technically the illegitimate child. I remember the whole reason of odelli having to inherit the throne was because she was older and aunt to the next in line (Albert) who was young at the time so she decided to inherit the throne and let her nephew have time to grow up. Also if he isn't Odelli's nephew then why is Cyril calling Odelli his Grand aunt. That wouldn't make sense unless she is an aunt to his father, Prince Albert.
I'm like 98.9% sure he's Prince Gautier's son but I'll go and check the MOC manhwa to be sure. ( ̄∇ ̄")

yes he was in line for the throne, it's mentioned in ch 67. it's in ch 90 where they mention that odelli will be queen and chose prince albert as her successor. it's also in ch67 where they mention how prince albert needs to fight with prince jacob for the right to the throne but he's too young so he wasn't getting any supporters
Basically in Marriage of Convenience Princess Audrey becomes the Queen, but she inherited the throne with promise that she would not marry or have children of her own and instead pass the throne to her nephew Prince Albert, who is the son of Prince Gautier (not the second prince but the first prince who death was basically the catalyst for the whole plot). Prince Albert was a young teen/tween in Marriage of Convenience that's why alot of you might have forgotten him. He was basically set up in a political marriage to Princess Nevara of Castile.
Now currently we have established that Prince Albert died before succeding the throne thereby breaking the political treaty between the country, and Princess Nevara is called back to her homeland by the King (her father)( I think cause Audrey won't do anything like that in my opinion) and is married to a Duke of her country.
ML called Queen Audrey his only family and she passed away when he was 14, which means Audrey is still alive. Although he died only a year later after she passed away at 15. The gap between the Fl and the Ml is 10 years.
Although there is no clarification about how he can exist in the current timeline as a 15 yr old and is his 5 yr old self also existing in this timeline too.
My guess on the pilgrim situation is i think the guy he saved is suppose to be Zachary's older brother who fell into the river. Idk who the pilgrim is though. Who is the blue haired hottie I don't remember yall.
Theory: The coup cyril faces has something to do with Zachary's older brother and this pilgrim. They have tried staging a coup before with the Second prince so it shouldn't be hard for them especially cause cyril is an inexperienced king. Would love some more input though. ╮( ̄▽ ̄)╭