Description Of The Picture

In this picture we see the main hall of a castle in the Feudal Age. At the bottom and center of the room, there is a royal throne and a king. (The king seems to be Alfonso X of Castile and Leon) in which their sudbitos be found around the monarch.
There are three people kneeling, one seems to be a scribe.
There is a queue of people who claim petitions to the king while the scribe writes them on a kneeling pad.
One person appears to be a priest kneeling. There also appears to see a nobleman.
People are slaves row.