Hi Ariel,
Glad somebody mentioned the Kerala knife; the guy we got this example from had several and had sourced them locally in Rajasthan, we later saw them described as Kerala knifes in one of Tirri's fine books, so not sure as to what they actually are. They certainly share some of the characteristics of the Pesh family, heavy blade, thick spine and multi segment hilts.
Hmm, just don't know!