There's an NFL quarterback named Seneca Wallace born in 1980, so apparently the name has some circulation in that culture. I can't seem to find another Jatwaun, however.
And I think "that culture" is first and foremost...American Indian.
FWIW-
Seneca Wallace is hardly a QB, he’s a skinny running back that can throw a little. We had him in Seattle for a few years and he underwhelmed decisively.
Are you checking the police beats?