Due to the weakening of his political position and his own concomitant motives, Pedro I abdicated on 7 April 1831 and departed for Europe.
Without a common cause in the person of the former Emperor, the radical wing of the Liberal Party seceded.
Honório Hermeto remained in the Liberal Party, which changed its name to Moderate Party to differentiate itself from its estranged radicals.
Meanwhile, as the new emperor, Dom Pedro II, was only a child of five, a regency—with little effective authority—was created.
This resulted in nine years of chaos, during which the country was plagued by rebellions and coup attempts initiated by unruly political factions.

On 19 July 1831, radicals and insubordinate military officers presented the Chamber of Deputies with a list of 89 Brazilians, including senators, whom they demanded be deported.
Honório Hermeto gave a speech in which he said that "neither a senator nor the most humble citizen belonging to the lowest class may be deported without having been prosecuted and convicted... Even when a citizen is an evildoer, his rights must be respected..." All the deputies but one agreed with him, and the incident was settled, with several battalions being disbanded.
As an adult, Pedro II would later remember that his "style of speaking was inelegant, and he had a stutter; but it vanished when he was aroused and at all times his arguments were tight knit, and somebody wittily remarked that [Honório Hermeto,] the marquis of Paraná, when he stuttered, stuttered arguments."

A second crisis arose on 30 July 1832.
A constitutional amendment effecting greater reforms was voted on and approved in the Chamber of Deputies, but still faced major opposition in the Senate.
Diogo Antônio Feijó and Aureliano Coutinho, both Moderates, planned a coup d'état.
Feijó would assume dictatorial powers and immediately enact the constitutional amendment, thus bypassing the Senate entirely.
Honório Hermeto called on his fellow deputies to uphold the Constitution: "We need not hurt the legal order and [constitutional] principles: we can make fair laws ... and in the respected Constitution we have safe and legal ways of giving the nation what it wants... let us not violate it [the Constitution], as it is our only safeguard."
He rallied the deputies to his view, and in defeating the unconstitutional proposal, the coup attempt was crushed.
Due to the weakening of his political position and his own concomitant motives, Pedro I abdicated on 7 April 1831 and departed for Europe. Without a common cause in the person of the former Emperor, the radical wing of the Liberal Party seceded. Honório Hermeto remained in the Liberal Party, which changed its name to Moderate Party to differentiate itself from its estranged radicals. Meanwhile, as the new emperor, Dom Pedro II, was only a child of five, a regency—with little effective authority—was created. This resulted in nine years of chaos, during which the country was plagued by rebellions and coup attempts initiated by unruly political factions.
On 19 July 1831, radicals and insubordinate military officers presented the Chamber of Deputies with a list of 89 Brazilians, including senators, whom they demanded be deported. Honório Hermeto gave a speech in which he said that "neither a senator nor the most humble citizen belonging to the lowest class may be deported without having been prosecuted and convicted... Even when a citizen is an evildoer, his rights must be respected..." All the deputies but one agreed with him, and the incident was settled, with several battalions being disbanded. As an adult, Pedro II would later remember that his "style of speaking was inelegant, and he had a stutter; but it vanished when he was aroused and at all times his arguments were tight knit, and somebody wittily remarked that [Honório Hermeto,] the marquis of Paraná, when he stuttered, stuttered arguments."
A second crisis arose on 30 July 1832. A constitutional amendment effecting greater reforms was voted on and approved in the Chamber of Deputies, but still faced major opposition in the Senate. Diogo Antônio Feijó and Aureliano Coutinho, both Moderates, planned a coup d'état. Feijó would assume dictatorial powers and immediately enact the constitutional amendment, thus bypassing the Senate entirely. Honório Hermeto called on his fellow deputies to uphold the Constitution: "We need not hurt the legal order and [constitutional] principles: we can make fair laws ... and in the respected Constitution we have safe and legal ways of giving the nation what it wants... let us not violate it [the Constitution], as it is our only safeguard." He rallied the deputies to his view, and in defeating the unconstitutional proposal, the coup attempt was crushed.
Honório Hermeto Carneiro Leão, Marquis of Paraná