Keywords: Ferdinand IV of Germany.jpg en Ferdinand IV of Germany century 17 Cropped from https //commons wikimedia org/w/index php title File Porträt_Ferdinand_IV_röm_König_ubs_G_0767_II jpg author Custom license marker 2014 01 01 PD-Art-100 Ferdinand IV of Hungary Copper engravings in the Universitätsbibliothek Salzburg Uploaded with UploadWizard |