Examine the importance of Frair Jerome in the development of the plot.
Friar Jerome is far more than a minor cleric in Horace Walpole's The Castle of Otranto; he is the moral and structural pivot on whom several turns of the plot depend. As confessor to the household and, later, as the guardian of a long-buried secret, he repeatedly redirects the action and binds the human intrigue to the supernatural design of the novel.
His priestly duties and standing in the castle. Jerome is the priest of the church of St. Nicholas and the confessor to Manfred's family. This religious office gives him privileged access to every member of the household and the moral authority to speak where others must stay silent. Because he moves freely between the chapel and the castle, he becomes the natural channel through which secrets pass and conflicts are brought to a head, so that almost every important development is filtered through his presence.
His interaction with the persons of the castle. Jerome deals directly with Hippolita, Matilda, Isabella and Manfred, and it is through these interactions that the plot advances. He counsels the gentle Hippolita and refuses to sanction her unjust divorce; he offers spiritual guidance to the devout Matilda; he shelters the fleeing Isabella; and he stands firm against the tyrant Manfred. By opposing Manfred's monstrous proposal to divorce Hippolita and marry his dead son's betrothed, Jerome keeps the central conflict of the novel alive and blocks the usurper's schemes at every turn.
His role in quelling turbulence in the castle. When passions flare, Manfred rages, Isabella flees, and Theodore is condemned, it is Jerome who steadies events. He restrains Manfred's fury, pleads for mercy, and repeatedly interposes reason and religion between the tyrant and his victims. His interventions calm the disorder that the supernatural portents (the giant helmet, the bleeding statue, the walking portrait) throw the household into, and they steer the action away from catastrophe long enough for the truth to emerge.
Friar as the biological father of Theodore. Jerome's single greatest contribution to the plot is the discovery, by a birthmark, that the condemned peasant Theodore is in fact his own son. This recognition scene halts Theodore's execution at the very edge of death and reopens the buried question of rightful inheritance, for Jerome is himself revealed to be the former Count of Falconara who took holy orders after losing his family. Through this revelation Theodore's noble origin is established and the reader is guided toward his true identity as the rightful heir of Otranto.
His upholding of the prophecy about the principality of Otranto. As a man of the church, Jerome speaks for divine justice against Manfred's usurpation. He voices the moral warnings that the supernatural signs merely dramatise, and he insists on the ancient prophecy that the castle and principality of Otranto should pass from Manfred's illegitimate line when its rightful owner grows too large to inhabit it. By championing this prophecy, Jerome gives a human voice to the retribution that the ghostly apparitions enact, and he pushes the plot steadily toward the restoration of the true bloodline.
Agent of the tragic climax and witness to its resolution. The entanglement of identities that Jerome sets in motion also contributes to the catastrophe, for it is in the confusion surrounding Theodore and Isabella that Manfred stabs his own daughter Matilda, mistaking her for Isabella at Alfonso's tomb. Jerome is present at these dying revelations; and when the ghost of Alfonso rises and the truth of the succession is confirmed, it is Jerome who confirms Theodore's royal descent. Finally, he witnesses the marriage of Isabella and Theodore, the union that seals the lawful inheritance of Otranto and closes the tale.
Conclusion. Thus Friar Jerome links the human intrigue to the supernatural design of the novel. Without him Isabella would have no refuge, the castle's turbulence would go unchecked, Theodore's royal identity would stay hidden, the prophecy would lack a human spokesman, and the final marriage that restores justice would have no priest to bless it. He is, in every sense, indispensable to the development of the plot.