Answer

If you mean the Ratnaprabhasūri mentioned in the Bṛhad-gaccha-gurvāvalī, he is presented as a learned Jain ācārya in the Bṛhad-gaccha lineage, connected with Vādidevasūri’s scholarly circle and associated with works such as Ratnākarāvatārikā and Doghaṭṭī-vṛtti. The Bṛhadgaccha-gurvāvalī is not just a list of names; it also preserves short narrative notes about teachers, including literary achievements, image consecration, and debates with non-Jains. ( wisdomlib.org)

Explanation

One important point is that the name Ratnaprabhasūri also appears in another Jain tradition, the Upkeśa Gaccha / Oswal origin narratives linked with Osian and Upkespur, where he is described as a missionary monk who influenced conversions and is tied to the Oswal community’s remembered beginnings. So it is best to keep the Bṛhad-gaccha lineage record separate from the Osian tradition when speaking about him. ( publishing.cdlib.org)

Takeaway

In the Bṛhad-gaccha context, Ratnaprabhasūri is remembered mainly as a scholar-ācārya; in the broader tradition, he is also linked with the Upkeśa/Oswal narrative. ( jainqq.org)