In May 1834, the "Hymn to the Constitutional Charter" was established as the anthem of the Kingdom of Portugal, and it was the official anthem until the establishment of the Portugese Republic, replacing the monarchy, in 1910. It was written in 1822 by Crown Prince Pedro of Bragança (later Emperor Pedro I of Brazil) to celebrate the Portuguese Constitution imposed by the liberals in Portugal. It is believed that he wrote both the lyrics and music of the hymn, since he was considered a very skilled musician; he titled this work in 1822 as "Imperial and Constitution Hymn", and when he became King of Portugal in 1826 it was known as "Hymn to the Charter" and already very popular.
Prince Pedro of Bragança, later Emperor Pedro I of Brazil (October 12, 1798 – September 24, 1834), was the founder and first ruler of the Empire of Brazil and also King of Portugal as Pedro IV, having reigned for 8 years and almost 2 months, respectively. His full name was Pedro de Alcântara Francisco António João Carlos Xavier de Paula Miguel Rafael Joaquim José Gonzaga Pascoal Cipriano Serafim (Peter of Alcantara Francis John Charles Xavier of Paula Michael Raphael Joachim Joseph Gonzaga Pascal Cyprian Seraph.). He was born on 12 October, 1798, in Queluz, the fourth child of King Dom João VI of Portugal and Infanta Charlotte of Spain. The Emperor-King was a member of the Portuguese branch and founder of the Brazilian branch of the House of Braganza and was referred to using the honorific "Dom" .
The stamp above of Emperor Pedro I of Brazil was issued in 1998, his 200th birth anniversary.