Kumarpal Desai is a noted Jain writer and scholar, not a Tirthankar. In Jain cosmology, no new Tirthankar appears in the present cycle after Mahavira. The next Tirthankar would arise in the following cycle, and the exact name varies between traditions (e.g., Padmanabh in Digambar texts and Mahapadma in some Śvetāmbara texts). So Kumarpal is not listed as a coming Tirthankar in the traditional scriptures.