Alfred had monasteries rebuilt with learned and moral men heading them. He built a nunnery which was headed by his daughter as prioress. He built a strong wall with four gates around London, which he had taken into his control. He appointed his son-in-law, who was one of his eorldormen, to be alderman [older man] to govern London and to be the shire's earl. A later king built a palace in London, although Winchester was still the royal capital town. When the king traveled, he and his retinue were fed by the local people at their expense. After Alfred's death, his daughter Aethelflared ruled the country for seven years. She had more fortified burhs built and led soldiers to victories. Under the royalty were the nobles. An earl headed each shire as representative of the King. The term "earl" came to denote an office instead of a nobleman. He led the array of his shire to do battle if the shire was attacked. He executed all royal commands. An earl received grants of land and could claim hospitality and maintenance for himself, his officers, and his servants. He presided over the shire court. He received one-third of the fines from the profits of justice and collected as well a third of the revenues derived from tolls and duties levied in the boroughs of his shire. The office tended to be hereditary. Royal representatives called "reeves" started to assist them. The reeve took security from every person for the maintenance of the public peace. He also tracked cattle thieves, brought suspects to court, gave judgments according to the doom books, and delivered offenders to punishment.