Gary's last name -- call for help

Gary is still debating what he wants to do about his last name. He is thinking about taking our last name, but still isn't quite ready for that. We had previously explored the idea of finding a name that honored his American Indian heritage. He doesn't know anything about it. All his mother told him is that his genetic father was Blackfoot. Of course that is a nation with more than one tribe and more than one language.

Last night I shared an idea with him. Our family name is means "night watchman." It is a occupation name. In the distant past, my husband's ancestors spent their nights walking the town ready to wake everyone up if there was a fire, or whatever. Anyway, I ask Gary what he thought about trying to find a Blackfoot word that meant something like "night watchman." It doesn't have to be that exactly. A word meaning "sentry" or "guard" would be fine. He liked it.

The problem though is obvious. Though we have found internet sites with lists of words, none of them are what we are looking for. And we would very much prefer to talk to someone who has some expert knowledge of the language.

So, anyone out there have any resources? How do we find someone who actually knows something about one or more Blackfoot languages who can help us?