The lady in pearls is a regent of the young successor to the throne.
The man at the left is a commander of the castle guard. He's very executive but also self-dependent and smart which is a big deal. He's in charge of a gang of thugs and criminals, holds them in iron fist and remains respected and loved by them. Has a talent to appear in any corner of the castle in three seconds after the call. His left eye is blind.
The man at the right is a tutor of the young successor. Intellectual elite and the second man of the state. He knows all the castle gossips but doesn't ask unnecessary questions. Master of beyond-curtain, under-carpet and on-bed intrigues. He's smiling because it's his job.