In the late ninth century, the monk and schoolmaster Notker of Saint Gall composed a hymn for the Church’s festival commemorating holy women. “In Natale Sanctarum Feminarum,” or “For the Festival of Holy Women,” provides a case study in how a text could deploy the memory arts to shape both individual and institutional identities around specific conceptions of gender. A liturgical poem intended for a monastic audience, this sequence demonstrates the memorial function of hagiography and its role in the construction of both individual and communal monastic identities. Notker represents Saint Perpetua in his hymn through carefully selected images from her Passio, which he then contextualizes among images of Mary and Eve. Through his hymn, Notker instructs his audience in how to read, remember, and understand Perpetua’s text. One effect of this mnemonic instruction is to suppress the possibility of the nuanced reading of gender that Perpetua’s Passio invites. Notker’s text instead structures the audience’s memory around binary gender categories, in which women’s sanctity and paths to holiness are clearly differentiated from those of men. This conception of gender difference, in turn, is constitutive of community membership, as Notker interpolates his audience into a community defined (in part) by its shared memory and understanding of holy women.