skos:altLabel | - his son William
- William FitzGerald
- The Duke of Leinster
- Marquess of Kildare
- Duke of Leinster
- 2nd Duke of Leinster
- Duke of Leinster's
- The 2nd Duke of Leinster
- William FitzGerald, 2nd Viscount Leinster
- William FitzGerald, Marquess of Kildare
- William FitzGerald, the Duke of Leinster
- William Robert FitzGerald
- William Robert FitzGerald, 2nd Duke of Leinster
- William Robert Fitzgerald, 2nd Duke of Leinster
- William, Marquess of Kildare
- second Duke of Leinster
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