American Tract Society Bible Dictionary
Acts 6:9 . This word is from the Latin libertinus, which signifies a freedman, that is, one who, having been a slave, either by birth or capture, has obtained his freedom; or one born of a parent who was a freedman. The "synagogue of the Libertines" stands connected with the Cyrenians and Alexandrians, both of whom were of African origin; it is therefore supposed by some, that the Libertines were of African origin also. It is, however, most probable that this word denotes Jews who had been taken captive by the Romans in war, and carried to Italy; and having there been manumitted, were accustomed to visit Jerusalem in such numbers as to erect a synagogue for their particular use; as was the case with Jews from other cities mentioned in the context. They originated the persecution against Stephen, which resulted in his martyrdom. See SYNAGOGUE
These files are public domain and are a derivative of the topics are from American Tract Society Bible Dictionary published in 1859.
Rand, W. W. Entry for 'Libertines'. American Tract Society Bible Dictionary. https://www.studylight.org/dictionaries/eng/ats/l/libertines.html. 1859.