Narapatisimhavarman

Narapatisimhavarman (Thai: นรปติสิงหวรมัน) is recorded in the Śrī Canāśa Inscription (K.949) as a ruler of Canasapura. He succeeded his father, Sundararavarman, in 937 CE, yet his reign appears to have been abruptly curtailed following the conquest of Si Thep by the Angkorian ruler Rajendravarman II in 946. In the aftermath of this campaign, the Angkorian monarch is reported to have installed "Vap Upendra" as his representative in the Rāmaññadesa in 949 CE, thereby subsuming Canasapura into the expanding Angkorian polity.

The subsequent status of Narapatisimhavarman remains uncertain. Some scholars have posited that his political authority was significantly diminished, citing the Sema Inscription (K.1141), dated to 971 CE, which refers to a nobleman named "Driḍhabhakti Simhavarman" (ทฤฒภักดี สิงหวรมัน). This individual has been tentatively identified with Narapatisimhavarman, suggesting that he may have adopted a new titular designation following the Angkorian conquest, thereby continuing in a subordinate or redefined role within the regional hierarchy.

After the incorporation of Si Thep into the Angkorian sphere of influence, the city experienced a marked decline in both political authority and economic significance, while its former eastern satellite, Mueang Sema, emerged as a more prominent regional center. Epigraphic evidence from this period attests to the activities of Mueang Sema elites, indicating the continued vitality of the area within the broader Angkorian polity. Nevertheless, after the reign of Jayavarman VII (r. 1181–1218), references to Angkorian presence or influence in the Mueang Sema area disappear from the historical record.