London was a walled town of one and two story houses made of mud, twigs, and straw, with thatched roofs. It included a bundle of communities, townships, parishes, and lordships. There were churches, a goods market, a fish market, quays on the river, and a bridge over the river. Streets probably named by this time include Bread Street, Milk Street, Honey Lane, Wood Street, and Ironmonger Lane. Fairs and games were held outside the town walls in a field called "Smithfield". The great citizens had the land qualifications of knights and ranked as barons on the Conquerer's council. The freemen were a small percentage of London's population. There was a butchers' guild, a pepperers' guild, a goldsmiths' guild, the guild of St. Lazarus, which was probably a leper charity (of which there were many in the 1000s and 1100s), the Pilgrims' guild, which helped people going on pilgrimages, and four bridge guilds, probably for keeping the wooden London Bridge in repair. Men told the time by sundials, some of which were portable and could be carried in one's pocket. London could defend itself, and a ringing of the bell of St. Paul's Church could shut every shop and fill the streets with armed horsemen and soldiers led by a soldier portreeve. Across the Thames from London on its south side was Southwark, a small trading and fishing settlement. The Conquerer did not interfere with landholding in London, but recognized its independence as a borough in this writ: "William the King greets William, Bishop of London, and Gosfrith the portreeve, and all the burgesses [citizens] of London friendly. Know that I will that you be worthy of all the laws you were worthy of in the time of King Edward. And I will that every child shall be his father's heir after his father's day. And I will not suffer any man to do you wrong. God preserve you." The Norman word "mayor" replaced "portreeve". So London was not subjected to the Norman feudal system. It had neither villeins nor slaves. Whenever Kings asserted authority over it, the citizens reacted until the king "granted" a charter reaffirming the freedoms of the city and its independence. Under pressure from the ecclesiastical judges, the Conquerer replaced the death penalty by that of the mutilation of blinding, chopping off hands, and castrating offenders. Castration was the punishment for rape. But these mutilations usually led to a slow death by gangrene.