King Upatissa I
Reign: 365–406 CE
Kingdom: anuradhapura
Upatissa I (365–406 CE) enjoyed a lengthy 41-year reign, enabling sustained infrastructural investment. He commissioned reservoirs, restored temples, and reinforced monastic endowments. His era represents mature Anuradhapura stability: agrarian surplus, Tooth Relic veneration, and Theravāda orthodoxy synthesizing into a durable state model. Chronicles praise his piety and judicial fairness.