Phitsanulok is also the birthplace of King Naresuan the Great (reigned 1590-1605) the legendary King who declared Ayutthayas independence from Burma in 1584. King Naresuan the Great is known for his victorious and honorable single hand combat on elephant back Yutthahatti against a Burmese Crown Prince. His heroic power and strong dedication to expelling the invaders from his motherland saved the country, and truly united the Kingdom which later was known as Siam and currently known as Thailand.
Phitsanulok was also a strategic location for other Ayutthaya Kings as it was a major center for military recruitment and a training camp when Ayutthaya waged wars with Burma.