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The title Duchess of Oldenburg and the use of the style "Highness" or "Royal Highness" has generally been restricted to the following persons:
- the spouse of the ruler of the Duchy of Oldenburg (only one ever existed)
- the spouse of the deposed head of the Grand Ducal House of Oldenburg
- the legitimate male-line female descendants of a head of the Grand Ducal House of Oldenburg
- the spouses of legitimate male-line descendants of a head of the Grand Ducal House of Oldenburg
Pages in category "Duchesses of Oldenburg"
The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes.