Unlike in the Crown of Aragon, where Archduke Charles's cause had broad and diverse popular support, in the Crown of Castile, Austriacism was primarily upheld by sections of the high nobility, clergy, middle-ranking officials, and some merchant groups affected by French trade dominance. Popular support was minimal and largely favored Philip V, in contrast to the Crown of Aragon. Additionally, the strong
regalism established in France by Louis XIV (
Gallicanism) also influenced part of the clergy to align with the Austriacist cause. The leader of Castilian Austriacism was
Juan Tomás Enríquez de Cabrera,
Admiral of Castile, who before the death of
Charles II led the so-called "German party" with the queen, Charles's last wife
Maria Anna of Neuburg, pressuring the king to name the Archduke Charles as successor. When Philip V took the throne, Enríquez de Cabrera went to Portugal, persuaded its king to abandon the Bourbon alliance, and join the
Grand Alliance. In 1703, he published a manifesto denouncing that Charles II's testament was manipulated to favor Philip of Anjou and accused Louis XIV of seeking to conquer Spain. He claimed the Spanish were thus released from their oath of allegiance, as Philip V imposed "slavery" by a "foreign nation." The manifesto also criticized the economic domination by the French. Other noble supporters included the
Viceroy of Sicily,
Juan Francisco Pacheco Téllez-Girón, and
Manuel Joaquín Álvarez de Toledo. The core of Castilian Austriacist ideology was dynastic legitimacy—the
legitimate House of Habsburg versus the
illegitimate House of Bourbon. This was reflected in the motto of the first regiment under Charles III the Archduke, created by the Admiral of Castile and sent to Catalonia in 1705:
Pro Lege, Rege et Patria. == Peru ==