My language has several cases. I have their affixes worked out for the nouns, as well as the proto-affixes, but what I want to know is, how can I get the pronouns to have different-looking cases? I know I can just simplify (e.g. the dative was *-lū, and 1sg *īs; deriving the 1sg dative from *īlu instead of the proper *īslū could get some results), but I want something more like she vs. them, or I vs. me. How could I do that?

My language has several cases. I have their affixes worked out for the nouns, as well as the proto-affixes, but what I want to know is, how can I get the pronouns to have different-looking cases? I know I can just simplify (e.g. the dative was *-lū, and 1sg *īs; deriving the 1sg dative from *īlu instead of the proper *īslū gives modern yel vs. 1sg ye [properly yes]), but I want something more like she vs. them, or I vs. me. How could I do that?