The civic coat of arms of Seclì is light grey and it represents a green snake and twenty-four  small signs that cannot be clearly identified. They could be olives, stones or ancient coins. The origins of this centre are still mysterious: some historians advocate that the toponym comes from the Jewish word "sicli," that was an ancient coin, and that the centre was founded by a Jewish colony in the X century. Other historians think that the first centre was founded by those who had escaped from the destruction of the Casale of Fulcignano, razed to the ground by the inhabitants of the Casale of  Galatone. The two centres were at war because Galatone had imposed the Latin rite, that Fucignano did not want to replace with the Greek one.  When the war finished some of the survivors left and settles after 4 km from their original town, thus founding Seclì. According to this thesis, therefore, the toponym  would derive from the Latin word "seclusus," that means "separate," and it makes reference to the separation from the people of Fulcignano. The first historical documents  deal with the events of the XII century, period in which  the feudal age started. The Norman king Tancredi of Altavilla gave  the centre to Filino De Ranna, later Seclì was governed by the Orsini del Balzos (being a centre of the Principality of Taranto),  the Briennes, the Enghienas and the D'Amatos. The last vassals were the Sanseverino, that ruled Seclì until  1806. During the D'Amatos' government a lot of religious monuments were built. Until  1948  Seclì was small village under the administration  of Aradeo, then it got its own administrative autonomy. Among the most well-known local people there is  Francesco Maria Severino, an appreciated man of letters of the XVIII century. He  lived  in the XVIII century and was a good monk. He wrote a lot of successful works.  Father Arcangelo from Seclì was a monk whose was spent in humility and  charity. Another important character is Isabella D'Amato: she was born in 1618 and belonged to a noble family. When she was 30 years old she became a nun and she was called Sister Chiara. Some people think she made  miracles and she died when she was 75 years old.