Duke of Terceira
| Ducal House of Terceira | |
|---|---|
| Parent house | House of Vila Flor | 
| Country | Portugal | 
| Founded | 1832 | 
| Founder | António José Severim de Noronha, 1st Duke of Terceira | 
| Current head | D. Lourenço Bandeira Manoel de Vilhena de Freitas, 4th Duke of Terceira | 
| Titles | 
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| Estate(s) | of Portugal | 
The title duke of Terceira, de juro e herdade (meaning "forever granted") was created by decree of King Pedro IV of Portugal, on 8 November 1832. António José de Souza Manoel de Menezes Severim de Noronha, 7th Count of Vila Flor, de juro e herdade, and 1st Marquis of Vila Flor, was the first holder of the title.