The Esala is believed to be a fusion of two separate but interconnected “Peraheras” (Processions) – The Esala and Dalada. The Esala Perahera, which is thought to date back to the 3rd century BC, was a ritual enacted to request the gods for rainfall. The Dalada Perahera is believed to have begun when the Sacred Tooth Relic of the Buddha was brought to Sri Lanka from India during the 4th century CE, eight hundred years after the passing away of Lord Buddha. According to tradition, the Tooth Relic was taken in procession to Sri Lanka by Princess Hemamala & Prince Dantha.
After the Kandyan Kingdom fell to the British in 1815, the custody of the Relic was handed over to the Maha Sanga (the Buddhist Clergy). In the absence of the king, a chief lay custodian called the “Diyawadana Nilame” was appointed to handle routine administrative matters concerning the relic and its care.