Military Spanish, born in Munguia (Vizcaya), in 1748. It was an officer of the Bourbon Cavalry Regiment, Colonel of the regiment of the Queen, brigadier and Marshal. Director of the Academy of Ocana. Corresponding member of the Academy of history. He/She used the pseudonym of the military naive and the anagram of Mr. Leuman Erriuga. He/She wrote various geographical treatises, such as: research and reflections on geography (Madrid, 1782). Some articles and news about his work in Madrid (1787-1789) mail appeared. He/She died in 1800.