Duke of Aveiro

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-  Máel Milscothach  ^D 13:29, Jul 30, 2017 (CEST)

Duke of Aveiro was - based on the city of Aveiro - a Portuguese nobility title to a royal duchy, which was created in the 15th century by King John I for his youngest son John .

A second award takes place in the 16th century for João de Lencastre (1501–1571), a son of Jorge de Lencastre, Duke of Coimbra , who in turn was an illegitimate son of King John II . The name of the ducal family, Lencastre or Lancastre, was borrowed from the wife of John I, Philippa of Lancaster , a daughter of John of Gaunt , the founder of the House of Lancaster .

Dukes of Aveiro

1. João de Lencastre (1501–1571), son of Jorge de Lencastre, Duke of Coimbra, and Beatriz de Vilhena; ∞ Juliana de Lara
2. Jorge de Lencastre (1548–1578), Duke of Coimbra; ∞ Maddalena Tellez-Giron
3. Álvaro de Lencastre (1540–1626), his cousin; ∞ Juliana de Lencastre, 1560–1636, daughter of Jorge de Lencastre
4. Jorge de Lencastre (1594-1632), Duque de Torres Novas; ∞ Ana Maria de Cárdenas y Manrique de Lara
5. Raimundo de Lencastre (1620-1666); ∞ Luísa Clara, Princess de Ligne
6. Pedro de Lencastre (1608–1673), son of Álvaros
7. Maria de Guadalupe de Lancastre y Cardenas Manrique (1630-1715), sister of Raimundos; ∞ Manuel Ponce de León, Duke of Arcos
8. Gabriel Ponce de León de Lencastre (1667–1745), no descendants
9. José de Mascarenhas da Silva e Lencastre (1708–1759), descendant of Álvaro de Lencastre and Juliana de Lencastre through his daughter Maria de Lancastre

After José de Mascarenhas was involved in the Távora conspiracy to overthrow Joseph I , Sebastião José de Carvalho e Mello , Marquês de Pombal, had him executed on behalf of the king; the property of the House of Aveiro was confiscated.