Moin,
It is not "Ostfriesland" or the "Oldenburger Land", but "only" Germany - the old homeland from where some emigrants started to a "New World".
Anyway, Albert Grulke of Australia has written a book on German migration to Australia. You can find it at the site
www.ainsleehooper.com/germlinks.htm.
Thanks to all who made it possible that we can read this book !
We wish you a
MERRY CHRISTMAS AND A HAPPY AND HEALTHY NEW YEAR.
Sincerely,
Ruth and Hans-Georg Boyken
Titonka, Iowa 50480, USA