skos:altLabel | - Lord Powis
- William Herbert
- Lady Powis
- 1st Marquess of Powis
- Duke of Powis
- Earl of Powis
- Marquess of Powis
- The Earl of Powis
- The Marquess of Powis
- William Herbert, 1st Duke of Powis
- William Herbert, 1st Earl of Powis
- William Herbert, 3rd Baron Powis
- William Herbert, Marquess of Powis
- William Lord Powis
- William, Marquess of Powis
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