Hahhh i really really want to know who is that woman yellow-pink hair next to the king

I think it was already said she was the royalty or ancestor of the current princess. I'm definitely crossing my fingers hoping there was no romance between that mysterious lady and the King...I just think this manhwa can stand alone without any romance.

Yeah
I know it was a princess but what i want to know its that the first princess to make a contract between the king