When was Chief Yellow Lark of the Lakota Tribe born?

Answer 1

Since native Americans did not record dates and did not have a standardised calendar the exact date of birth of Chief Yellow Lark is unknown. There is even some dispute that Yellow Lark was a genuine full-blood Lakota; he was able to accuratelytranslate Lakota prayers into English in 1887, at a time when few middle-aged or elderly Lakotas could speak any English at all.

If the photographs available online really are of "Yellow Lark" and date to around 1887 (there is no guarantee that they do show him or are of that date), he looks to be around 30 years old, making his date of birth some time in the 1850s.