Songtham
King of Ayutthaya
King Songtham (Thai: สมเด็จพระเจ้าทรงธรรม) also known as King Borommaracha I (Thai: สมเด็จพระบรมราชาที่ ๑) was the king of the Ayutthaya Kingdom from 1611 to 1628, of the Sukhothai dynasty. His reign marked a period of prosperity for Ayutthaya following the restoration of independence from the Toungoo Empire after the reign of Bayinnaung. It also saw the beginning of expanded overseas trade, particularly with the Dutch and the Japanese. Songtham employed foreign mercenaries as royal guards; most notably the Japanese soldier Yamada Nagamasa (Okya Senaphimuk), commander of the Japanese volunteer corps.
Origin
Inthraracha was the eldest son of King Ekathotsarot with his first class concubine. He was in the priesthood for 8 years before government servants asked him to leave and ascend the throne with the title Phrachao Songtham at the age of 29.
Rebellion
King Ekathotsarot died in 1610/11 and was succeeded by King Si Saowaphak. Ruling less than a year, and showing no ability, he was murdered. Before his death, Japanese traders stormed the palace and took the king hostage. He was released only after promising not to harm any of the Japanese.
This brief starts where responsible research should: with the source description of “Songtham” as king of Ayutthaya. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the people & ideas register because the source frames it as king of Ayutthaya. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Jun 10, 2026. The linked authority identifier is Q561528. VIAF identifies the subject as 67378177. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1611, 1628 and 1610.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Songtham”, its source revision and the description used here.
- Expand the search: follow Songtham primary sources, Songtham archive and Songtham research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Songtham”?
- How has the subject’s reputation changed across later accounts?
- Which primary records establish identity, chronology and institutional ties?
Search terms from this dossier
This entry incorporates text from “Songtham” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.