Was one of the thirthankars a female
Answer
Yes — in the Śvetāmbara Jain tradition, the 19th Tīrthaṅkara, Mallinātha, is considered to have been female. In the Digambara tradition, however, all 24 Tīrthaṅkaras are regarded as male, and Mallinātha is accepted as male.Explanation
This is one of the well-known differences between the two main Jain traditions:- Śvetāmbara view: Mallinātha was a female Tīrthaṅkara.
- Digambara view: A woman does not become a Tīrthaṅkara, so Mallinātha was male.
So the answer depends on which Jain tradition is being followed.