44 A MEDIAEVAL CITY granted them. The weavers were the largest and wealthiest body of traders. Guilds had developed from societies of masters and men engaged in the same trade, to the trade- guilds, which in the fourteenth century were trade corporations, the lower ranks of members being the workers, the higher ranks, including the office-holders, the richer merchants, the capitalist employers. The ruling committees of the trade- guilds made regulations and generally governed their particular trades. Despite the power of the guilds the municipal authority maintained its supremacy in civic government because it enforced the ordinances of the trades. Moreover, disputes between the guilds themselves gave the city authority opportunities of increasing its power, of which it availed itself. The system of serfdom, by which serfs were bound to a particular domain and owned by their overlord, had not yet ceased. Nearly all the workmen of York, however, were freemen, i.e. they had full and complete citizenship. The members of the councils of aldermen and councillors, the mayors and city officials, the members of the trade-guilds, were all freemen. In the fifteenth century the wealthy and im- portant employers and traders governed, the guilds. They were in the position and had the power to regulate the conduct in every way of their own trades. Thus, rules were laid down as to the terms of admission of men to the practice of a trade ; the government of the guild and the meetings of the members and ruling committees; the moral standard of the members in their work and traf- ficking ; the payments of masters to workers; the prices of goods to be sold to the public or other