I was talking about a community which is both Matriarchal and Matrilineal. Matrilineal communities widely exist. Rarely Matriarchal communities are also there.

Thanks for doing a search and fetching data. It's helpful to provide an information base for the discussion. But still, this is not the primary area of concern. As Jay mentioned, this is an area of acadamics and a sidestream as far as our discussion is concerned.

Deepak