Oak Creek

 is a city in the NCR. A man named Blake comes from there.

In the quest Unfriendly Persuasion near Jacobstown, if you choose to kill the mercenaries, the leader will have the item Mercenary Note on his body, which states he is supposed to harass Jacobstown the same way he previously harassed squatters in.

Appearances
is mentioned in Fallout: New Vegas.