The recent history of debate over the question of same-sex marriage has tended to take as a given that the concept did not exist in pre-modern times, but a growing body of evidence suggests that this is not entirely the case. This article begins with the usual review of the problems in identifying what would constitute historic evidence for female homoeroticism before the modern period, though Emma Donoghue's work is cited as establishing early uses of terms like "lesbian" and "sapphist", which are relatively unambiguous.