S. D. Somasundaram
Indian politician

Thiru SD Somasundaram (25 February 1930 - 6 December 2001) also known as S.D.S., was a political leader and administrator who served as a cabinet minister of the Tamil Nadu state.
Early life and background
Somasundaram was born in the village of Sendankadu near Pattukottai into an agricultural family. He was an active social worker and was associated with various social organizations. He pursued a bachelor of engineering (BEng) in mechanical engineering from Annamalai University. He was an athlete and played football in college. He also participated in a marathon race, representing Tamil Nadu. After graduating, Thiru started working as an assistant engineer in the public works department.
Thiru S.D.S. began his political career as an activist of the Dravidar Kazhagam in 1947 and joined the D.M.K. when the late C.N. Annadurai founded the party in 1949. He was first elected to parliament from the Thanjavur Lok Sabha constituency in Tamil Nadu in 1967 after defeating R. Venkataraman of the Indian National Congress, the former president of India. He was re-elected from the same constituency in 1971 and 1977 on DMK and AIADMK tickets, respectively.
Begin with the source’s own compact description: “S. D. Somasundaram” is indian politician. The dossier treats that line as a proposition to test through Somasundaram, Indian and politician, not as a finished interpretation.
Why this record matters
The phrase “indian politician” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
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 Jul 30, 2026. The linked authority identifier is Q7387430. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1930, 2001, 1947 and 1949.
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 “S. D. Somasundaram”, its source revision and the description used here.
- Expand the search: follow S. D. Somasundaram primary sources, S. D. Somasundaram archive and Somasundaram 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 “S. D. Somasundaram”?
- 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 “S. D. Somasundaram” 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.