Oldenburg – Herzogtum (duchy)Emigration and ImmigrationEdit This Page
From FamilySearch Wiki
Here is a link to emigrants from the Duchy of Oldenburg
The port of Brake in the Weser delta was an emigration port for Germans into all the world, until 1850 when the cheaper fares from Bremerhaven via steam boats were preferred. If you are interested in the history of Oldenburg shipping this link might give you further clues.