6th century BCE Greek poet whose work implies erotic relations with women and whose name and home island of Lesbos have become standard references to love between women.
Renaissance philosophy tackled the question of friendship: who is an appropriate friend, what behavior should a friend exhibit, what is the relationship between the love of friends and sexual desire? Given the times, the majority of texts addressing this topic were concerned with friendships between men, though a nod was often given to Sappho as a proponent of female friendships, or to the possibility of “Platonic love” between women, which is given explicit license in the Symposium as well as by Renaissance writers commenting on it, as Agnolo Firenzuola did.
Early modern Europe had quite a fondness for encyclopedic works that defined and classified the entire known world (and much that was imaginary). Theodor Zwinger (1533-1588) wrote Theatrum vitae humane (Theater of Human Life) in something of a biographical dictionary form, in groupings according to the characteristic that provided their fame. Under the section “Tribades” he notes “Here we say nothing which has not been said before, and collect only a few items.
We have not entirely managed to shed the idea that an individual’s habitual predispositions are reflected in their physical features. The Greek pseudo-Aristotelian Physiognomics is one of the foundational treatises that systematized this view. References to female homoeroticism (as opposed to male references) in the context of physiognomy are rare and primarily appear in texts derived from an anonymous Latin treatise of the 4th century.
Homoeroticism cannot be identified in historic contexts without letting go of modern notions of what it would look like or what other relationships it would be compatible or incompatible with. There are few explicit images of sexual activity between women in Roman art. Brooten (1996) gives two examples of female homoeroticism, only one of which is sexual: a grave relief of two freedwomen clasping hands (dextrarum iunctio) in a manner normally used to symbolize marriage, and a wall painting from Pompeii that appears to show two women engaging in oral sex.