The high office of Admiral of the Kingdom of Portugal was created by King Denis of Portugal, who ruled Portugal for 46 years from 1279 to his death in 1325.
The high office of Admiral of the Kingdom of Portugal (Portuguese: Almirante do Reino de Portugal) as the head of the Portuguese navy was created by King Denis of Portugal in 1317 (or 1322) for the Genoese nobleman and naval officer Manuel Pessanha (Emanuele Pessagno). 6 February 1279  7 January 1325 Denis ruled Portugal for over 46 years. 7 January 1325 (aged 63)
Santarem, Portugal 
