''Tarombo'' is a term for
genealogy
Genealogy () is the study of families, family history, and the tracing of their lineages. Genealogists use oral interviews, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kins ...
in
Batak
Batak is a collective term used to identify a number of closely related Austronesian ethnic groups predominantly found in North Sumatra, Indonesia, who speak Batak languages. The term is used to include the Karo, Pakpak, Simalungun, Toba, ...
culture/language. The Batak believe that they all come from the same ancestor:
Siraja Batak, the Batak patriarch.
They kept the genealogy line tracing back to this ancestor, called Tarombo Batak. Its origins have been clouded with legends.
References
Batak
Genealogy
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