First news of the village is in the document of division (to.1047) of the ownership possessed by the prince Guaimario V (IV) of Salerno and from his brothers Guido, count of Conza and Pandolo, Count of Capaccio and Corneto, «in finibus lucanie, proper ubi to duo flumina dicitur » and that is near Velia.

 Ownership that was separated into three rectangular portions. One of the confinements of the northern portion passed for a little river that divided the tenimentis of Guarrazzano and Omignano. Rather, to better clarifying, it was added that <> northern confined to west with tenimentis of Guarrazzano.In a document of 1110, edit from De Blasi is said of the <> inhabitants of the village.

From Giustiniani is learned that king Ferrante, on November 27th 1463 (from Terlizzi) alienated for Roberto Sanseverino the land of Guarrazzano. Then the feud passed to the family of Sangro, if in the 1513 Sigismondo, on the occasion of the wedding among prince Alfonso with Brigida of Capua, also gave Guarrazzano to the son.

In the 1517 Anthony Caracciolo purchased Guarrazzano and the fourth part of Gaudo. There is also news that in 1524, after Alfonso of Sangro, his child Giovanni Consalvo asked for the relative feudal investment. We suppose, however, that the Caracciolo only someone of the feudal rights had purchased on the village. The sale of Porcili (Stella Cilento), was made byCarlo de Angelis (a. 1617) to Lucio Matarazzo for ducats 8.100, also including the villages of St. Giovanni, Guarrazzano and Malafede.

Giustiniani says that, in a document, Guarrazzano was said S. Giovanni Guinazzo.In 1741, the duke Ignazio Barretta of Casalicchio alienated for ducats 16.000, Porcili (Stella Cilento) and Guarrazzano to Nicola Ventimiglia, from which to the descendants that it was Anthony Cesare in 1800. Giustiniani situates the village to the feet of the Stella mountain, to miles 40 from Salerno, writing that the inhabitants were devoted to the agriculture (wine's produzlone, oil, chestnuts, acorns) and the family industry of the breeding of the swines, adding that there are « various wells of good water ».