Ferdinand II of Aragon

Ferdinand II of Aragon is both the victorious commander of Catalina’s childhood and the father whose later diplomacy tests her judgment as a queen. The novel first presents him beside Isabella of Castile during the campaign against Granada: he backs her refusal to retreat, and later, in alliance with Katherine, uses English military commitment to serve Spain’s own strategic aims. His importance lies in this double role. He gives his daughter a model of command, but also teaches her that a ruler’s loyalty to a country may outweigh even family ties.

King and Commander in the Granada Campaign

During a crisis in the siege of Granada, Ferdinand stands with the generals as they urge a seasonal retreat. The army has lost its tents and shelter, and the commanders argue that withdrawing to resupply is the sensible course. Isabella refuses, invoking both pride and God’s will as reasons to continue. When the generals look to Ferdinand, he gives a small gesture of assent and publicly supports her decision. His response does not erase the practical difficulty facing the army; it confirms that he will uphold the queen’s judgment at a moment when the commanders have challenged it.

Ferdinand’s agreement is significant partly because it is concise. The novel gives the decisive speech to Isabella, while Ferdinand’s gesture and brief endorsement secure her position before the assembled generals. Their campaign is presented as a protracted struggle: the Christian kingdoms have advanced south over generations, while Granada’s defenders expect support that does not arrive. By January 1492, the city is encircled and starving. Boabdil agrees to terms, then comes on foot to the gates with the keys to the Alhambra Palace on a silken pillow and hands them to Ferdinand and Isabella. The surrender places Granada, its fortress, and its palace in their hands, completing the military campaign that frames Catalina’s early life.

The royal family’s presence in the campaign gives Ferdinand’s kingship a domestic setting as well. At Santa Fe, a stone town built where there had been a camp, the royal household takes shelter in a small house arranged around an Arabic courtyard. Ferdinand is there with Isabella, their son and heir, their older daughters Isabel, María, and Juana, and baby Catalina. The account emphasizes the hardships and improvised order of the camp, but does not describe Ferdinand directing the town’s construction; that work is associated especially with Isabella’s determination to establish secure shelter and supplies.

Father to Catalina

For Catalina, Ferdinand is not simply a distant sovereign. She grows up watching him command campaigns and later remembers that she has never seen him lose. His example shapes how she understands military leadership: as preparation, discipline, and the sustained movement of men and supplies, rather than pageantry alone. She recalls that he keeps soldiers occupied and his horses fit, and she treats this knowledge as evidence of what a competent commander does. Her childhood closeness to his campaigns becomes part of her own political education.

When Katherine helps prepare an English expedition in 1512, she interprets her work through that inheritance. She oversees provisions, armories, and equipment, believing that a battle can be won only if it is reliably supplied. Her confidence in the campaign is also confidence in her father: she expects him to lead Spain’s army, defeat France, defend the Pope, and help secure French lands for England. Serving alongside him, she feels she has reached a new stage in her life as his daughter. The military partnership seems to fulfill the lessons of her childhood and her long wait for a position from which she can act politically.

The 1512 Campaign and Its Reversal

The treaty calls for the English army to join Ferdinand’s forces and invade southwestern France, including Guienne and the Duchy of Aquitaine. Katherine believes Ferdinand will keep his promise to campaign with the English and that their combined effort will reduce France’s power. The English fleet sails in a display of strength, but the expedition does not unfold as she expects. English troops remain inactive at Fuenterrabia, where their presence alarms the French and draws their attention away from Ferdinand’s movements.

Katherine recognizes the strategy only after the consequences become clear. She understands that Ferdinand has used the English as a diversion and counterweight while he marches into Navarre, which is left exposed. The English army returns in December in disorder. Its men have been hungry and mutinous; two thousand have died of illness, and its commander has struggled without the reinforcements or orders he expected from Ferdinand. To Henry VIII, the expedition has brought shame. Katherine instead explains that, from Ferdinand’s point of view, it has succeeded: the English have helped him secure Navarre.

She describes her father as a masterly double-dealer and tells Henry that Spain has taken its reward before completing the work promised to its ally. Her assessment is not based on a sudden discovery that Ferdinand is a poor commander. It follows from precisely the opposite judgment: she knows his habits as a soldier and concludes that leaving the English idle must have served a deliberate purpose. The reversal forces her to distinguish military competence from fidelity to an alliance.

Spain Before Family

In the next campaign season, Katherine sees the same priority in a different form. While she organizes preparations for an invasion of northern France, she learns that Ferdinand has been speaking of peace with France at the same time that her own officers are gathering English troops for war. She believes he has chosen peace because it is safer for Spain, even though that choice betrays the alliance and deceives her. When the news becomes public, he blames his ambassador and letters that went astray. Katherine regards this as a weak excuse, but she does not claim that her father’s underlying choice is incomprehensible.

Instead, she recognizes the logic of his conduct from her new position as queen. A ruler may love a country so intensely that its safety comes before an ally and even before a child. Katherine does not say that this makes the betrayal harmless; she concludes that Ferdinand will join the English when victory appears likely, while accepting that his first responsibility is to Spain. Her judgment develops from admiration without becoming either blind trust or simple condemnation.

Political and Narrative Significance

Ferdinand’s relationship with Catalina supplies the novel with a lasting contrast between instruction and independence. His example helps form her as a commander: she learns to value preparation, disciplined forces, and the strategic meaning of movement. Yet the campaigns in Fuenterrabia and Navarre show that the same lessons can be used against her. Reading Ferdinand accurately means understanding not only how he commands an army, but whose interests he is serving.

As a father, he remains central to Katherine’s sense of purpose; as a king, he acts according to Spain’s advantage even when England bears the cost. The resulting conflict does not cancel her respect for his ability. It makes that respect more politically demanding. Ferdinand is therefore both a formative presence in her past and a test of her judgment in the present: the commander she has trusted since childhood becomes the ally she must assess for herself.