Before the Revolution
France was a monarchy ruled by the king. The king had total power over the government and the people. The people of France were divided into three social classes called "estates." The First Estate was the clergy, the Second Estate was the nobles, and the Third Estate was the commoners. (google)
The role of pawnbrokers in the middle ages is : Making loans in exchange for property
So basically if the people in that period need some sort of fund, they can get it with the exchange of their valuable personal property (such as expensive arts, antiques, or gem stones)
hope this helps
To get them more things in life