[Initial Date.] What then was the initial date of the Traikútakas? Ten Gujarát copper-plates of the Gurjjaras and Chalukyas are dated in an unknown era with Sam. followed by the date figures as in the Párdi plate and as in Gupta inscriptions. The earliest is the fragment from Sankhedá in the Baroda State dated Sam. 346, which would fall in the reign of Dadda I. of Broach. [151] Next come the two Kaira grants of the Gurjjara king Dadda Prasántarága dated Sam. 380 and Sam. 385 [152]; and the Sankhedá grant of Ranagraha dated Sam. 391 [153]; then the Kaira grant of the Chalukya king Vijayarája or Vijayavarman dated Samvatsara 394 [154]; then the Bagumrá grant of the Sendraka chief Nikumbhallasakti [155]; two grants from Navsári and Surat of the Chalukya king Síláditya Sryásraya dated 421 and 443 [156]; two the Navsári and Kávi grants of the Gurjjara king Jayabhata dated respectively Sam. 456 and Sam. 486 [157]; and a grant of Pulakesi dated Samvat 490. [158] Of these the grant dated 421 speaks of Síláditya Sryásraya as Yuvarája or heir-apparent and as the son of Jayasimhavarmman. The plate further shows that Jayasimhavarmman was brother of Vikramáditya and son of Pulakesi Vallabha 'the conqueror of the northern king Harshavardhana.' The name Jayasimhavarmman does not occur in any copperplate of the main line of the Western Chalukyas of the Dakhan. That he is called Mahárája or great king and that his son Síláditya is called Yuvarája or heir-apparent suggest that Jayasimhavarmman was the founder of the Gujarát branch of the Western Chalukyas and that his great Dakhan brother Vikramáditya was his overlord, a relation which would explain the mention of Vikramáditya in the genealogy of the copper-plate. Vikramáditya's reign ended in A.D. 680 (Saka 602). [159] Supposing our grant to be dated in this last year of Vikramáditya, Samvat 421 should correspond to Saka 602, which gives Saka 181 or A.D. 259 as the initial date of the era in which the plate is dated. Probably the plate was dated earlier in the reign of Vikramáditya giving A.D. 250. In any case the era used cannot be the Gupta era whose initial year is now finally settled to be A.D. 319. The second grant of the same Síláditya is dated Samvat 443. In it, both in an eulogistic verse at the beginning and in the text of the genealogy, Vinayáditya Satyásraya Vallabha is mentioned as the paramount sovereign which proves that by Samvat 443 Vikramáditya had been succeeded by Vinayáditya. The reign of Vinayáditya has been fixed as lasting from Saka 602 to Saka 618 that is from A.D. 680 to A.D. 696-97. [160] Taking Saka 615 or A.D. 693 to correspond with Samvat 443, the initial year of the era is A.D. 250.