Relic of Saint Ferdinand III of Castile, King of Castile and León

Relic of Saint Ferdinand III of Castile, King of Castile and León

+ Episcopal Certificate, 1865

Historical note:

Saint Ferdinand III was King of Castile and León (Spain). He was not King of France. The Latin label “S. Ferdinandi Regis” visible in the reliquary corresponds to this Spanish saint-king.

This devotional object contains a bone relic (ex ossibus) of Saint Ferdinand III of Castile (Sanctus Ferdinandus III, Rex Castellae et Legionis), one of the most important royal saints of medieval Christian Europe.

The relic is housed in a round metal reliquary with a glass front, measuring 4 cm in diameter. The relic fragment is mounted on a traditional textile backing and identified by an original handwritten Latin label reading “S. Ferdinandi Regis”.

The reverse of the reliquary is secured with its original red episcopal wax seal, bearing the coat of arms of the issuing bishop. The intact seal confirms that the reliquary has not been opened since its official ecclesiastical authentication. The reliquary remains complete and preserved in canonical condition.

Episcopal Certificate (1865)

The relic is accompanied by its original Latin certificate of authenticity, dated 1865, issued in accordance with the norms established by the Council of Trent for the recognition and public veneration of sacred relics.

The document formally attests that:

• the relic was carefully examined and recognized as authentic;
• it was reverently enclosed in a suitable reliquary, bound with silk thread, and sealed with episcopal wax;
• it was approved for public veneration by the faithful.

The certificate bears the printed episcopal coat of arms, embossed seal, date, and original signatures, fully corresponding to the wax seal on the reliquary itself.

The Issuing Bishop

The certificate was issued under the authority of Engelbert Sterckx (Engelbertus Sterckx).

• Cardinal of the Holy Roman Church
• Archbishop of Mechelen, Primate of Belgium
• One of the most prominent Catholic prelates of 19th-century Belgium
• Actively responsible for ecclesiastical governance, doctrinal discipline, and the authentication of relics

Cardinal Sterckx was widely respected for his strict adherence to canonical regulations and for ensuring the integrity of Catholic devotional objects. His involvement provides strong ecclesiastical and historical credibility to this relic and its documentation.

Saint Ferdinand III of Castile (1199–1252)

Saint Ferdinand III is revered as the ideal model of a Christian king.

He is especially remembered for:

• uniting the kingdoms of Castile and León;
• advancing the Reconquista while governing with justice and restraint;
• founding churches, monasteries, and charitable institutions;
• his personal piety, humility, and devotion to Christian moral principles.

Canonized in 1671, Saint Ferdinand became a symbol of righteous kingship, combining political authority with deep religious faith. His relics were venerated throughout Spain and Catholic Europe, particularly during the 17th–19th centuries.

Significance

This ensemble — consisting of the reliquary, its intact episcopal wax seal, and the matching episcopal certificate dated 1865 — represents a well-documented and canonically authenticated 19th-century Catholic relic.

It is:

• historically traceable and ecclesiastically certified,
• appropriate for museum, scholarly, or devotional collections,
• a tangible witness to medieval Christian kingship and sanctity,
• directly associated with one of Spain’s most venerated royal saints

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