Thai chronicle traditions disagree on King Suea's parentage. The
Phan Chantanumat (Choem) Chronicle states that he was a
somdet phra chao luk ya thoe ("royal son") of
Phetracha. By contrast, the
Somdet Phra Phonnarat, Wat Phra Chetuphon manuscript chronicle claims that he was a secret son of
Narai and a royal consort who was the daughter of Phraya Saen Luang, ruler of Chiang Mai. Related testimony literature also preserves varying details about the mother. The
Testimony of Khun Luang Ha Wat gives her name as Phra Ratchachaya Devi or Chao Chom Sombun, while the
Testimony of the Inhabitants of the Old Capital calls her Nang Kusawadi. These accounts broadly agree that she had been Narai's secret consort and was later given to Phetracha when he held office as
chao krom chang (head of the Elephant Department), differing mainly in her name and in the explanation for why the child was raised under Phetracha's household.
Names and birth traditions The
Somdet Phra Phonnarat Chronicle records his original name as Maduea (). In
Pathomwong by
K.S.R. Kulap, he is instead called Dok Duea (), explained as a reference to his birth beneath a fig tree in the Phichit area while his mother was accompanying Ok Phra Phetracha on a royal journey with Narai to worship the Phra Phuttha Chinnarat and Phra Phuttha Chinnasi at Phitsanulok.
Birth year A key clue for his birth year appears in the writings of the German physician
Engelbert Kaempfer, attached to a
Dutch East India Company mission to Siam in 1690. Kaempfer states that Phra Sorasak (
Peja Surusak), the
uparat (viceroy), was 20 years old in 1690. This would place his birth around 1670. ==The "Revolution" of 1688==