Gangerawal (often spelled Gangerwal) is a surname/gotra-name used by some Jains, but there is no single universal “origin” for this gotra across all Jain groups. Gotras are mainly social/clan identifiers that vary by community (e.g., Oswal, Porwal, Agrawal, etc.) and by region. So the Gangerawal gotra, where it exists, would derive its origin within a specific Jain community and locality, not from a universal Jain scriptural rule. Digambar and Śvetāmbara traditions both treat gotras as social lineage markers, not spiritual determinants, and the exact gotra lists can differ between communities and regions. You can read a concise explanation on this topic here.
If you share your particular Jain community (for example, Oswal, Porwal, or another group) and your region, I can describe which gotras are commonly listed for that group.
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