Society in the middle ages was generally arranged around classes. Nobility, such as a baron or earl, comprised the top slot. Below them were the clergy, who enjoyed a separate class as part of the church. Then came the middle class, in the form of merchants and traders, although these were not as numerous as the next class, the serfs. Serfs were the average citizen of the day, who worked on their farms and owed taxes to their lord, according to the system of feudalism.