American Tree Sparrow

Events in the year 1811 in Portugal.

• Monarch: Mary I

• 11 March – Battle of Pombal
• 12 March Battle of Redinha
• 14 March – Battle of Casal Novo
• 25 March – Battle of Campo Maior
• 3 April – Battle of Sabugal
• 14 April–10 May – Blockade of Almeida

• 27 January – João Crisóstomo de Abreu e Sousa, prime minister (died 1895)

• 4 June – Antonia Ferreira, businesswoman, known for leadership in the cultivation of port wine and for winemaking innovations (d. 1896).^[1]