Dear Debra, I have known of the Bennells in WA as there was a book published of Nungar families and their family trees. I do have the publishers name somewhere. Also I have an old "Identity" magazine with a Bennell on the cover. She looked very much like my sister. So all I can say is there must be a connection somewhere. It's all very interesting.
I can send you photos of some Bennells if you would like.