Batak societies are patriarchal organized along clans known as Marga. The Toba Batak believe that they originate from one ancestor "Si Raja Batak", with all Margas, descended from him. For detailed information about Batak Marga check www.tarombo.net. Toba Batak are known traditionally for their weaving, wood carving and especially ornate stone tombs. Their burial and marriage traditions are very rich and complex. The burial tradition includes a ceremony in which the bones of one's ancestors are reinterred several years after death. This secondary burial is known among the Toba Batak as (mangongkal holi).
The Batak themselves today are mostly Christian with a Muslim minority. The dominant Christian theology was brought by Lutheran German missionaries in the 19th century. One of the most famous German missionaries involved was Ludwig Ingwer Nommensen. Christianity was introduced to the Karo by Dutch Calvinist missionaries and their largest church is the GBKP (Gereja Batak Karo Protestan), but there is a considerable Muslim minority. Mandailing Batak were converted to Islam in the early 19th century.
Batak speak a variety of closely related languages, all members of the Austronesian language family. There are two major branch, a northern branch comprising the Pakpak and Karo languages that are similar to each other but distinctly different from the languages of the southern branch comprising three mutually intelligable dialects: Toba, Angkola and Mandailing. Simalungun Batak is an early offspring of the southern branch. Some Simalungun dialects can be understood by speakers of Karo Batak whereas other dialects of Simalungun can be understood by speakers of Toba. This is due to the existance of a linguistic continuum that often blurres the lines between the six Batak dialects.
Batak speak a variety of closely related languages, all members of the Austronesian language family. There are two major branch, a northern branch comprising the Pakpak and Karo languages that are similar to each other but distinctly different from the languages of the southern branch comprising three mutually intelligable dialects: Toba, Angkola and Mandailing. Simalungun Batak is an early offspring of the southern branch. Some Simalungun dialects can be understood by speakers of Karo Batak whereas other dialects of Simalungun can be understood by speakers of Toba. This is due to the existance of a linguistic continuum that often blurres the lines between the six Batak dialects.