Of possible relevance in at least some of these cases - the term "virgin" used to mean something entirely different - not sexually chaste but more like "beholden to no man."

https://www.sutterhealth.org/health/teens/sexual/defining-virginity#

“Virgin” originated from the Greek and Latin word “virgo,” or maiden. It was used often in Greek mythology to classify several goddesses, such as Artemis (also known as Diana) and Hestia.

Artemis is the Greek virgin goddess of the moon and the hunt; she protects women in labor, small children and wild animals. Hestia is the Greek virgin goddess of the hearth. She never takes part in the struggle between men and gods.

Virginity and virgin were once terms of power, strength and independence, used to describe the goddesses who were immune to the temptations of Dionysus, Greek god of seduction and wine.