title: 1780 in Portugal
text: # 1780 in Portugal
  
  Events in the year 1780 in Portugal.
  
  ## Incumbents
  
  * Monarch: Mary I
  
  ## Events
  
  * 16 January – Battle of Cape St. Vincent, a naval battle off the southern coast of Portugal during the Anglo-Spanish War. A British fleet defeated a Spanish squadron.
  
  ## Births
  
  * 10 May – José Homem Correia Teles, judge and politician (d. 1849).
  * 20 May – José Bernardino de Portugal e Castro, marquis (d. 1840)
  * 12 July – Mouzinho da Silveira, statesman, jurist and politician (d. 1849)
  
  ## Deaths
  
  * 18 January – Gaspar of Braganza, Archbishop of Braga (b. 1714)
  * 23 October – João da Bemposta (b. 1726)
  
  ### Full date missing
  
  * Abade António da Costa, composer (b. 1714)
  * Miguel António do Amaral, court painter (b. 1710)
  