i ▁r ul ers ▁bore ▁the ▁reg nal ▁name ▁" M aha - sh iva - gu pta ". ▁While ▁the ▁P and uv am sh i ▁co pper - plate ▁ins cri ptions ▁are ▁ins cribed ▁using ▁" box - head ed " ▁characters , ▁all ▁the ▁stone ▁ins cri ptions ▁starting ▁from ▁the ▁reign ▁of ▁Bal ar j una ▁are ▁ins cribed ▁in ▁the ▁Nag ari ▁script , ▁which ▁is ▁also ▁the ▁script ▁of ▁the ▁Som avam sh i ▁ins cri ptions . ▁The ▁early ▁Som avam sh i ▁k ings ▁ruled ▁in ▁western ▁Od ish a , ▁which ▁once ▁formed ▁the ▁eastern ▁part ▁of ▁Dak sh ina ▁Kos ala , ▁and ▁the ▁Ch aud war ▁ins cription ▁of ▁the ▁earliest ▁known ▁Som avam sh i ▁king ▁Mah ash iv agu pta ▁I ▁( alias ▁Jan ame j aya ) ▁describes ▁him ▁as ▁Kos al endra ▁(" l ord ▁of ▁Kos ala "). ▁Several ▁Som avam sh i ▁ins cri ptions ▁record ▁gr ants ▁to ▁people ▁from ▁Kos ala , ▁gr ants ▁of ▁villages ▁located ▁in ▁Kos ala , ▁and ▁appointment ▁of ▁Kos ala - specific ▁officers . ▁ ▁All ▁these ▁similar ities ▁indicate ▁that ▁the ▁Som avam sh is ▁were ▁related ▁to ▁the ▁P and uv am sh is , ▁but ▁this ▁cannot ▁be ▁said ▁with ▁certain ty . ▁According ▁to ▁one ▁theory , ▁the ▁P and uv am sh is ▁were ▁driven ▁out ▁of ▁Kos ala ▁by ▁the ▁Kal ach ur is , ▁and ▁migr ated ▁east ward .