Sorry, I have only just checked messages. My Penberthys married into the Kirkpatrick family, who have a website with lots of info on Penberthys as well. Try to google "Australian Kirkpatricks". Basically they were from Cornwall/Devon border near Horrabridge and came out to Elsmore in New England district for the tin. They were all metallurgists or the equivalent, some went to mining areas in Vic and S.A. , also in Mexico where there are still Penberthys 150 years later but they are named Pablo etc !
My direct email address is firstname.lastname@example.org
if you need to contact me direct. Good hunting, Liz