, a prominent nobleman in the reign of King Phetracha. Ekkathat had one younger brother Uthumphon and five sisters who shared the same mother. Ekkathat also had an older half-brother Prince Thammathibet who was born to another main consort of Prince Phon.

In 1732, King Thaisa became ill. Prince Phon, younger brother of King Thaisa and Ekkathat's father, mobilized his forces in preparation for the upcoming succession conflict but