Carlists dispute that Ferdinand VII had the authority to change the Spanish monarchy's line of succession by issuing the Pragmatic Sanction of 1830 and claim that such document was without legal effect.
The Pragmatica Sanctin resulted in Fernando's daughter Isabella II, rather than his brother, Infante Carlos, becoming the Spanish monarch.
However, the absolutist party of the landowners and the Church, were not satisfied with this compromise, and they continued to regard Miguel as the legitimate successor to the throne on the grounds that according to the Portuguese succession rules (approved by the Cortes after the 1640 Restoration), Pedro had lost the right to the Portuguese crown, when he took possession of a foreign crown (Brazil).
[4] The Legitimists (French: Légitimistes) are royalists in France who adhere to the rights of dynastic succession of the descendants of the elder branch of the Bourbon dynasty, which was overthrown in the 1830 July Revolution.
[5] The Gustavians (Swedish: Gustavianerna) were a political movement in the Kingdom of Sweden that supported King Gustav III of Sweden's absolutist government and attempted to uphold his legacy and defend the interests of his descendants of the House of Holstein-Gottorp following his assassination in 1792.