I wonder if the author would bother to give a reason to why his mother never had another child.
Usually nobles go with the heir and a spare rule when it comes to children. One son to inherit the title and another son in case anything happens to the first. That's why royalty have multiple children in most cases.
Here
https://www.mangago.zone/read-manga/i_m_a_stepmother_but_my_daughter_is_just_too_cute/uu/nhs_chapter-958745/pg-13/
He said he was fourteen when the king died










I still cannot get over the fact that Mielle tried to kill her own father, the man who brought her up with so much love.
What a cold-hearted bitch ._.
Shit i wanna like but pressed the wrong button.
It's okay~ (●'◡'●)ノ