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In page Matthias the Apostle:

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It is claimed that St Matthias the Apostle's remains were brought to Italy through Empress Helena, mother of Emperor Constantine I (the Great); part of these relics were interred in the Abbey of Santa Giustina, Padua, and the remaining in the Abbey of St. Matthias, Trier, Germany. According to Greek sources, the remains of the apostle are buried in the castle of Gonio-Apsaros, Georgia.[citation needed][7]