From left to right:

Bryce of House Forrester, Fifth of his name, King of Daruia, and Lord of the Forest
Kathleen of House Forrester, First of her name, Princess of Daruia, and Lady of the Forest
Constance of House Broch, Third of her name, Queen of Daruia, Princess of Brynach, Lady of the Mountains and Rivers.

Art by  shockley23
Kathleen originally created and adopted from  theviktor