. "Konrad II, Count of Oldenburg in Oldenburg" . "Counts, Dukes and Grand Dukes of Oldenburg" . "Counts, dukes and grand dukes of Oldenburg#Grand Dukes of Oldenburg" . "Counts, dukes and grand dukes of Oldenburg#Dukes of Oldenburg" . "Counts,_dukes_and_grand_dukes_of_Oldenburg#Prime ministers of the Republic of Oldenburg" . "complete list" . "Counts, dukes and grand dukes of Oldenburg#Counts of Oldenburg" . "Countship of Oldenburg" . "Grand Ducal Family" . . "Grand Duke" . "Duke of Oldenburg" . "ruling family of Oldenburg" . . "Oldenburg family" . "Grand Duke of
Oldenburg" . "Count of Oldenburg" . . . "Count of Oldenburg-
Delmenhorst" . "Grand Duke of Oldenburg" . . . "Grand Dukes of Oldenburg" . "Counts, dukes and grand dukes of Oldenburg" . "Counts of Oldenburg" . . . "Counts, dukes and grand dukes of Oldenburg" . "Otto II, Count of Oldenburg in Delmenhorst." .