WI: Amador Bueno of São Paulo does not declare for Portugal in 1641?

As a Brazilian living south of the Tietê River, there is one event in our history both interests and kinda confuses me.
As we all know, Brazil came with the imperial package of the Habsburg Iberian Union between Spain and Portugal. During the personal union period, it seems that Brazil received a bunch of Spanish merchants and colonial administrators, most of them being concentrated in the captaincy of São Paulo, and in the city of the same name.
In 1641, after Portugal declared unilateral independence from Spain, there was an upheaval across Brazil and a subsequent division of loyalties. The aforementioned Spanish-speaking elite of São Paulo, one day, decided to proclaim independence in the region (a completely unprecedented event that would only succees 130 years later with the British Thirteen Colonies). They selected a well-known landowner named Amador Bueno de Ribeira to be their king. However, they did so without his consent -- Amador decided to instead swear fealty to the King of Portugal, the separatist plot was foiled, and the colony of Brazil returned to Portugal. Amador Bueno was rewarded by Portuguese authorities for his compliance. He lefta family descendants, among which Carlos Drummond de Andrade, Getúlio Vargas, and Tancredo Neves have been present.
But what if Amador Bueno had not declared fealty towards Portugal on the day of the aclamação in 1641?
I don't believe he could take hold of all of the colony of Brazil if he were to declare independence or vassalage for Spain instead. Could we see a separate Spanish colony, or even independent kingdom, from the Tietê River southwards?
 
As a Brazilian living south of the Tietê River, there is one event in our history both interests and kinda confuses me.
As we all know, Brazil came with the imperial package of the Habsburg Iberian Union between Spain and Portugal. During the personal union period, it seems that Brazil received a bunch of Spanish merchants and colonial administrators, most of them being concentrated in the captaincy of São Paulo, and in the city of the same name.
In 1641, after Portugal declared unilateral independence from Spain, there was an upheaval across Brazil and a subsequent division of loyalties. The aforementioned Spanish-speaking elite of São Paulo, one day, decided to proclaim independence in the region (a completely unprecedented event that would only succees 130 years later with the British Thirteen Colonies). They selected a well-known landowner named Amador Bueno de Ribeira to be their king. However, they did so without his consent -- Amador decided to instead swear fealty to the King of Portugal, the separatist plot was foiled, and the colony of Brazil returned to Portugal. Amador Bueno was rewarded by Portuguese authorities for his compliance. He lefta family descendants, among which Carlos Drummond de Andrade, Getúlio Vargas, and Tancredo Neves have been present.
But what if Amador Bueno had not declared fealty towards Portugal on the day of the aclamação in 1641?
I don't believe he could take hold of all of the colony of Brazil if he were to declare independence or vassalage for Spain instead. Could we see a separate Spanish colony, or even independent kingdom, from the Tietê River southwards?
There was a reason why he sought refuge in the Monastery of Saint Benedict: the Jesuits and the Church were pro-Portugal. Soon there would be militias from São Vicente and Rio going to São Paulo, with the sanction of local Portuguese authorities, and the rebellion would be crushed. Maybe ITTL it would be seen as a proto-independentist revolt.
 
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