It refers to ian individual who belongs to a certain group of people.
I read something along those lines, and if I understood it correctly, it meant that a person is a member of a board/organisation, but has little influence or impact within it. A member in name only perhaps, or have I completely got the wrong end of the stick?
to drive sb away onto the four winds.
To put an end to someone's activity in a brutal and violent way? To drive someone out in an equally brutal way?