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The Patrician of the city imposes slowly the control over the Saxon territorial organizations. In the XIV th century appear the Saxon seats (local administrative and legal body governing for a period of time ). In this context, the seat of Saxon Sebes (Sedes-Sebus) is reminded in 1303, being the second Saxon seat that came chronologically after that of Sibiu.The Head was  a royal judge  (judex regis) and a county seat  judge(judex sedis, judex terrestris),  that judges the trials.The Sebes city emblem was a shield with a crowned lion. Please note that only the royal towns were entitled to put his crown and emblem. The Medieval Sebes was ruled by a council. "The Judge”,a jury composed of 12, wealthy townsfolks, led by royal county, where appears the town -Bürgermeister, Magister, Civitas and administrator-Hann, Villicus,too.

  Due to the prosperous ecclesiastical and secular activities Sebes will be the first town in Transylvania which obtain in 1387, from King Sigismund of Luxembourg, the right to surround the town with a  stone wall. The fortress, which encircle the medieval city, was built in several stages, with defense towers given in maintaining to the guilds and four gates for access.

Economic importance of Sebes is proven by documents that Sebes was listed among the top five cities in Transylvania, Sighisoara besides, Orastie, Sibiu and Brasov, which benefit from the renewal of guild status on 9 November 1376,by the king of Hungary. That document specifies that there were 19 guilds in Sebes. In the following centuries the number increases, the importance and contribution of the guilds to the administration of the legal and military town.

Following the fight from  Nicopole (1396), Sebes and some other towns were given, as a reward ,to the king of Hungary and Michael Solomon of Sighisoara, thus losing the status of a  free  city.The Sebes  regain that right in 1438, under the Turkish threat.

  Following the Turkish attack in 1438, the Southern Transylvania is devastated. Sebes is robbed, burned destroyed by the Sultan Murrad II, and many residents of the town are killed and taken into captivity. From the locals who resisted until the end of the battle there was a student, known as the Student of ROMOS. The Student’s Tower (or of the Tailors' Guild) has remained since then as a local symbol of resistance against enemies.The Student from ROMOS describes how it was taken in captivity by the Turks, and sold off several times until he was released by his master, in "Treatise on the customs, morals, life conditions and the malice of the Turks". The first edition appeared in Rome in 1475 and was printed in 100 years in 25 editions.

Many other Turkish attacks will devastate the city and the nearby area. In the year 1479,at the beginning of the fight against the Turkish army, nobles withdraw between the castle walls "Saxobanya", identified with the Sebes.The intervention of  Pavel the Chinese , makes fight to be turned in favor of Christians, reddening the waters of Mures by the multitude of victims attending the fight under the Christian flag: Romanians, Germans and Hungarians.

The  Turkish danger and the events that happened , have determined the Ruler of Transylvania, Stefan of Tileag, to order, in the summer of 1491,to a counselor in Sebes, to prepare all the residents of the town for a possible new Turkish incursion.

Matei Corvin, king of Hungary, Sebes renewed ,through a document, the right to recover the fortification, severely damaged during the years 1480, 1482 and 1493. External works will be finalized in the years 1505-1506.

After the defeat of Mohacs (1526) and the change of Hungary into a Turkish” pashalic” Transylvania becomes autonomous Principality , under Turkish suzerainty. TheFormer voivode, Zapolya John (1510-1526), with Turkish support and setting Stephen Mailath, for a while ,on the throne of Transylvania, is elected king of Hungary until 1540, fighting for this throne  with Ferdinand de Habsburg. Sebes is aware of the political fight, and surrender in front of  John Zapolya ‘s soldiers in 1531.

On  July 21^st,1540 John  Zapolya, died in Sebes, in the current Museum building, a former princely Palace, leaving  King, as heir, his son John Sigismund,  14 days old. On the political scene of Transylvania took  place different events  that will lead to the coming to power of the Austrians. This situation  ends   on  March 12, 1556, when the Diet, met in Sebes, decided to recall the minor Sigismund of Transylvania and the queen mother Isabella. The Prince of Transylvania, Sigismund Bathory (1581-1602), Sebes gives the citizens the right to appoint prosecutors  with full power in their court cases, both in their religious forum, as well as the civilian one.

Michael the Brave stops in Sebes-"city of His Majesty" -for three days to start then through Codlea to Giurgiu. Note that Sebes, Orastie Miercuria seat gave Michael the Brave's an army of 500 soldiers. In a document from the year 1599, the citizens of  Sebes swear  to be faithful to the Cardinal Andrew Bathory, the Transylvanian rival of Michael the Brave. After the victory at Selimbar, Michael the Brave, sets his camp in Sebes. From here, Michael the Brave,made his triumphal entry in Alba Iulia. Michael the Brave will set the camp of   Szekler (Secui),  faithful to him..

The Sebes Diet, from June 1 of 1639, adopted first chevron(emblem) of Transylvania.

Sebes is burned and devastated by the Turkish attack in 1661. Aftr this event  remained untouched only the church, the school, the parish house and two houses. The town was partially rebuilt, with the support of Prince Michael Apafi between 1662 and 1664. The bishops of eight  Romanian cities and lands in Romanian Transylvania, those from Sebes too ask the Prince Michael Apafi , on 12 March 1662, in Alba Iulia, as one of their former bishop Sava Brancovici to be kept in the chair as a ruler..

  Transylvania under Austrian domination  shows the  political, economic and social obedience but also a development of the province,  through an excessive tax on the Sebes, and the villages belonging to it. h After the destruction mentioned in 1661,  Sebes is put on fire in1707  by the troops of Francis Rakoczy, which led to a decrease of population .So between 1748 and 1770 new families from the German region Baden-Durlach, severely affected by famine and floods were brought here.. In the XVIIIth century there is a fluctuation of the Romanian population in the city of Sebes, though they are  majority both in the  city and in the county ..