In Jain tradition, the answer differs by sect:

• Śvetāmbara view:

Mallinath (Mallīnātha), the 19th Tirthankar, is regarded as female — often called Mallī Devī / Mallī Kumārī. So for Śvetāmbar Jains, Mallinath is the only female Tirthankar in this time‑cycle.

• Digambara view:

Mallinath is regarded as male, because Digambar doctrine holds that all 24 Tirthankars of the present half‑cycle are male.

So:

• There is no dispute that Mallinath is the 19th Tirthankar.
• The difference is only about the gender of that last birth:

- Female according to Śvetāmbara. - Male according to Digambara.