Answer

The most commonly cited example is Nandan Muni. In Jain tradition, he performed the 20-step penance, including devotion for Arihant, and thereby earned Tirthankar-nāma-and-gotra-karma; he was later born as Lord Mahāvīra. ( jainworld.jainworld.com)

Explanation

In Jainism, Tirthankar-nāma-gotra is not gained by ordinary worship alone; it is bound through very pure spiritual causes such as right faith, compassion, self-control, and deep devotional practice. Another well-known example is King Shankh, who through high spiritual practices and deep devotion earned Tirthankar-nāma-and-gotra-karma and later became Arishtanemi / Nemināth. ( jainqq.org)

Takeaway

So, if you mean “who got Tirthankar nāma-gotra through bhakti,” the standard answer is Nandan Muni; and another example from Jain tradition is King Shankh. ( jainworld.jainworld.com)