628 from Zizhi Tongjian, vol. 193. 630 in Baumer,2,198, Christian, p260, Sinor,309 has alive in 630. Baumer starts the reign c617.
Golden, Introduction 135. According to Chinese historical sources, the marriage was never carried out because of interference by the Eastern Göktürk Illig Qaghan, whose territory sat between his territory and Tang territory and who felt threatened by the proposed marriage. Zizhi Tongjian, vol. 192.
