Answer

If you mean Udayaprabha Suri (often written as Udayprabha/Udayprabhsuri), he was a Śvetāmbara Jain monk and scholar. Jain sources describe him as Udayaprabhadeva Sūri, a monk of the Nāgendragaccha, in the line of Vijayasena Suri, and the guru of Mallisena Suri. ( jainqq.org)

Explanation

He is remembered in Jain literary history for works such as Dharmābhyudaya Mahākāvya and Sukṛtakīrtikallolinī. A scholarly source also notes that his Karjikāvṛtti on the Upadeśamālā was written in 1243 CE. He is also linked with the literary circle of Vastupāla. ( jainqq.org)

Spiritual Understanding

In Jain tradition, such ācāryas are valued not only for their monkhood, but also for preserving dharma through study, teaching, and composition. Udayaprabha Suri belongs to that respected Jain scholarly lineage. ( jainqq.org)

Takeaway

So, “Udayprabh Suri Maharaj” most likely refers to Udayaprabha Suri, a respected medieval Jain monk-scholar. ( jainqq.org)