no restrictions on the choice of candidates. In 1493 the Sejm, began meeting every two years at Piotrków. It comprised two chambers: a Senate of 81 bishops and other dignitaries a Chamber of Deputies of 54 deputies representing their respective domains. The numbers of senators and deputies later increased. On April 26, 1496, King John I Albert granted the Privilege of Piotrków. The Statutes of Piotrków increased the nobility's feudal power over serfs. It bound the peasant to the land, and only one son though not the eldest, was permitted to leave the village. Townsfolk mieszczaństwo were prohibited from owning land. Positions in the Church hierarchy were restricted to nobles. On 23 October 1501, the Polish–Lithuanian union was reformed by the Union of Mielnik. It was there that the tradition of a coronation Sejm was founded. Here again, the lesser nobility, lesser in wealth only – not in rank – attempted to reduce the power of the Magnates with a law that made them impeachable before the Senate for malfeasance. However, the Act of Mielnik of 25 October did more to strengthen the Magnate-dominated Senate of Poland than the lesser nobility. Nobles as a whole were given the right to disobey the King or his representatives — non praestanda oboedientia, and to form confederations, armed opposition against the king or state officials if the nobles found that the law or their legitimate privileges were being infringed. On 3 May 1505 King Alexander I Jagiellon granted the Act of Nihil novi nisi commune consensu – "I accept nothing new except by common consent". This forbade the king to pass new laws without the consent of the representatives of the nobility in the assembled Sejm, thus greatly strengthening the nobility's powers. Essentially, this act marked the transfer of legislative power from the king to the Sejm. It also marks the beginning of the First Rzeczpospolita, the period of a szlachta-run "Commonwealth". In 1520 the Act of Bydgoszcz granted the Sejm the right to convene every four years, with or without the king's permission. At about that time the Executionist Movement, seeking to oversee law enforcement, began to take shape. Its members sought to curb the power of the Magnates at the Sejm and to strengthen the power of the monarch. In 1562 at the Sejm in Piotrków they forced the Magnates to return many leased crown lands to the king, and the