Place: Limopuluah Koto
Limopuluah Koto was the last of the three luak established. "50 Koto" literally means "50 villages," so it's the area with 50 villages.
Source: Usman, Abdul Kadir. 2002. Kamus Umum Bahasa Minangkabau Indonesia. Padang: Anggrek Media.One origin myth relates the story that fifty people set out from Tanah Data to search for new lands: one stopped elsewhere on the way, so in the end there were actually fewer than fifty villages established.