Council, eight from each _terzo_ of the city, half from each order.[3] But their rule became irksome to the more conservative section of the nobles, who formed a rival party and strove to oust the _popolani_ from power. In 1240 it came to blood, to adopt the Dantesque phrase. The opponents of the new regime, headed by the Podestà, Manfredi da Sassuolo, rose in arms; the people, led by a certain Aldobrandino di Guido Cacciaconti, who is described as one of the "grandi del popolo di Siena," and who was of an old feudal family, rallied round the Twenty-four. The battle began in three places in the city. There was fighting up and down the narrow streets; there was flaming of torches and clashing of weapons round the palaces and towers. The Palazzo Tolomei and the Palazzo Malavolti were burned, and after much devastation and bloodshed, when many had fallen on either side, the Twenty-four got the upper-hand, drove out a certain number of the nobles, and appointed Aldobrandino Podestà. He was a strong and prudent man, who put down disorder with a firm hand, and reconciled many of the leaders of either party. In the comparative tranquillity that followed, the streets and squares of Siena were paved for the first time. But the struggle with Florence proved disastrous. The Sienese were forced to make a disadvantageous peace, and, in 1255, there was an alliance concluded between the rival republics, in the epoch of Guelf predominance that followed the deaths of Frederick II. and King Conrad. It was in this brief breathing space, of external peace and internal tranquillity, that a knight of Siena, Messer Folcacchiero de' Folcacchieri, wrote what was once thought to be the earliest extant example of a regular canzone, describing his own hapless plight through love: _Tutto lo mondo vive senza guerra_: "All the world is living without war, yet I can find no peace." The constitution at this time shows the usual bewildering number of separate councils that we find in mediaeval Italian republics. The four Provveditori di Biccherna with their Camarlingo still administered the revenues of the State, the executive was in the hands of the Podestà and Captain. Laws were discussed and approved in the General Council of the Campana, composed of "three hundred good Catholics, not excommunicated nor suspected of heresy." There was nominally a Parliament, which the Podestà and Captain could not summon without the consent of two-thirds of the Council of the Campana, and without previously explaining what they intended to propose. But "the Twenty-four were the informing soul of the constitution, and once a month they met in secret council without the Podestà and Captain."[4]