Dom John VI (Portuguese:
João VI; – ), nicknamed "the Clement", was King of the
United Kingdom of Portugal, Brazil and the Algarves from 1816 to 1822, and, although
de facto the United Kingdom over which he ruled ceased to exist, he remained so
de jure from 1822 to 1825; after the
recognition of Brazilian independence under the 1825
Treaty of Rio de Janeiro, he continued as
King of Portugal and the Algarves until his death in 1826. Under the said Treaty he also became Titular
Emperor of Brazil for life, while his son,
Emperor Pedro I, was both
de facto and
de jure the monarch of the newly independent country.