Belloc spoke of a similar case.

There is another of a young negress who was able to nourish an infant; and among the older writers we read accounts of young virgins who induced lactation by applying infants to their breasts.

Bartholinus, Benedictus, Hippocrates, Lentilius, Salmuth, and Schenck mention lactation in virgins.
De la Coide describes a case in which lactation was present, though menstruation had always been deficient.

Dix, at the Derby Infirmary, has observed two females in whom there was continued lactation, although they had never been pregnant.

The first was a chaste female of twenty-five, who for two years had abundant and spontaneous discharge of milk that wetted the linen; and the other was in a prostitute of twenty, who had never been pregnant, but who had, nevertheless, for several months an abundant secretion of healthy milk.