Duke Christian of Oldenburg was born on 1955-02-01.
Duke George of Oldenburg was born on 1784-05-09.
Duke Elimar of Oldenburg was born on 1844-01-23.
Duke Friedrich August of Oldenburg was born on 1936-01-11.
Duke Constantine Petrovich of Oldenburg was born on 1850-05-09.
Duke Alexander Petrovich of Oldenburg was born on 1844-06-02.
Duke Peter Alexandrovich of Oldenburg was born on 1868-11-21.
Duke Peter Georgievich of Oldenburg was born on 1812-08-26.
Duke George of Oldenburg died on 1812-12-27.
Duke Elimar of Oldenburg died on 1895-10-17.
Duke Constantine Petrovich of Oldenburg died on 1906-03-18.
Duke Alexander Petrovich of Oldenburg died on 1932-09-06.
Duke Peter Alexandrovich of Oldenburg died on 1924-03-11.