Theodore—Isabella

Theodore and Isabella’s relationship, as it stands at the novel’s conclusion, is a companionship formed in the aftermath of Matilda’s death and the transfer of Otranto’s rule. Their union is neither Manfred’s attempted marriage bargain nor the alliance Hippolita proposed: it emerges only after Theodore’s grief has altered what he can imagine for his future.

The dynastic arrangements surrounding them

Isabella first enters the story as the daughter of Frederic, Marquis of Vicenza, whom Manfred has arranged to marry his son Conrad. Her guardians have delivered her to Manfred’s care so that the wedding can take place when Conrad’s health permits. The match is meant to connect the two houses, whose claims to Otranto are in conflict; after Conrad dies, Manfred turns that dynastic plan toward himself and offers to marry Isabella instead.

Theodore’s connection to Isabella develops against this coercive political background, but the two are not simply pieces in the same marriage strategy. When Frederic’s herald demands Isabella’s return and Manfred’s resignation of Otranto, Manfred considers negotiating by marrying her himself. He also hopes to conceal her flight from Frederic’s party. The herald’s challenge makes plain that her marriage has become entangled with the competing claims to the principality.

A proposed alliance that does not take place

After Frederic arrives, Hippolita proposes a different marriage: she would offer her daughter Matilda to Frederic, hoping to unite the rival houses and avert their destruction. The proposal is presented as a response to the signs that Otranto’s rule is passing from Manfred. It does not establish a match between Theodore and Isabella; instead, it demonstrates how marriage has repeatedly been considered as a means of settling the succession.

At the end, Frederic offers his own daughter to Theodore, now recognized as the new Prince of Otranto. That offer, too, is set aside. Theodore’s grief for Matilda is too recent for him to contemplate another love, and the political logic of an alliance cannot immediately displace his mourning.

Companionship after Matilda’s death

Theodore and Isabella speak repeatedly about Matilda, and those conversations become the path by which Theodore is eventually persuaded that he can find happiness in Isabella’s company. The sequence matters: their future together follows grief rather than erasing it. Isabella’s companionship offers Theodore a life in which the sorrow that has taken hold of him can continue to be acknowledged.

The concluding account describes them as united in society, not as a match that resolves the political crisis by itself. Manfred abdicates, and Theodore’s succession is established through the revelations and judgments of the ending; only afterward does Theodore accept Isabella’s companionship. Their relationship therefore marks a personal settlement within a changed political order, while retaining Matilda’s memory as part of their shared life.

Significance

The relationship contrasts with the earlier attempts to make Isabella’s marriage serve the interests of Otranto’s ruling house. Manfred first assigns her to Conrad, then proposes himself as her husband; later, Frederic’s proposed match for Theodore likewise carries the promise of dynastic alliance. Theodore’s eventual choice is narrated differently: it follows their conversations about Matilda and is grounded in the companionship he can accept while grieving.

The ending does not make Isabella a replacement for Matilda or present their union as the disappearance of sorrow. Instead, Theodore’s future with Isabella accommodates his continuing melancholy. Their bond closes the personal narrative with companionship, even as the succession itself is resolved through Theodore’s recognition as Otranto’s rightful ruler and Manfred’s abdication.