Wikipedia
Maezaeis or Maizaioi or Mazaioi (Old-Greek: Μαζαῖοις) were a sub-tribe of the Illyrian which settled in Pannonia. They were the autochthonous Illyrian tribe, which inhabited the interior of today's Bosnia and Herzegovina, mainly in the Sana basin and the middle Vrbas river, approximately around the Vrbanja and Ugar Rivers (550., BC – 300). AC.y
This area is on the maps of the time referred to as Donji Kraji (Lower end-lands). Some areas of their territory were shared with the Dassaretaes and Autariatess. They were borderline with the Dardans (east), Iapodes (west, around Una river and Krka waterfalls) Iasis, Colapians and Varsians (north: Sava - Drava - Danube), and Liburni and Delmatae (south), Breuci (northeast: today's Slavonia) and Deriops (south: around Jajce and Pliva).
Like other Illyrians, Mezei lived in strong or semi-fortified settlements, subsisting on agriculture, hunting and fishing . Ancient writers like Herodian, Livy, Pliny, Strabo, Theophrastus and others described the Illyrians as people of high growth, with strong warriors, and heavy drinkers. They did not maintain personal hygiene, and lived in patriarchal communities. According to them, every eight years they shared the land (territory), divided into each other's struggles and resistance to the enemy. Maizaioi have had 269 judges.
Among Illyrians matter "are the most famous Dassaretae, Mezei, Daors, Dalmatae, Iapodes, Ardian, Autariates, Deuri, Deretins ...".
Romans, when they won the first Dalmatia islands (229. y. BC), was founded his province Illyricum. After tough Illyrian resistance to their invasion into the interior, finally won the country a significant King and Gentius ( Gentius, 167 or 168 BC). An entire, in bloody battles, were able to penetrate the interior of Illyria.
Gradually, Rome won the interior region of the Balkans and Mezei. This centuries-Illyrian drama ended between 6th and 9th AD, and took place at the center of today's Bosnia and Herzegovina. It was a well-known Bellum Batonianum – Batonian uprising (named after the two leaders – namesake: Dassaretaeian and Breucian Buttons). The last time they reunited many Illyrian tribes and, according to Roman chroniclers, through the Rome circulated a panic stories about 800,000 insurgents, including 200,000 elite soldiers and 8,000 horsemen. The uprising was caused by the forced mobilization of the Illyrians in the Roman army.