The following is an incomplete list of notable Pashtuns. The list includes those born to parents who are both Pashtuns and those who have mixed Pashtun ancestry. Pashtun people are usually defined by speaking the East Iranian dialects of Pashto and related dialects (i.e. Waneci, Wazirwola) as their mother tongue, and/or Practice Pashtunwali (culture); however, there exist many Pashtun communities that assimilated and/or shifted to speaking another language but trace their ancestral roots to Pashtun tribes. In several cases, patrilineal lineage is counted for Pashtun ancestry according to Pashtun culture regardless of the mother's line or mixed descent. Pashtuns most likely originated as a tribal confederation of people or peoples of proto-Indo-European origin somewhere in Central Asia from