Keywords: Nikolaus Friedrich, Hereditary Grand Duke of Oldenburg.jpg en Nikolaus Friedrich Hereditary Grand Duke of Oldenburg 1910 LOC-image ggbain 15629 <br/>Cropped from File Duke Nicholas of Oldenberg LOC jpg http //www flickr com/photos/8623220 N02 The Library of Congress Custom license marker 2013 07 28 PD-Bain Dukes of Oldenburg Uploaded with UploadWizard |