St. Mary's Cathedral (Tamil: புனித மரியன்னை பேராலயம், romanized: Puṉita Mariyaṉṉai Pērālayam; Sinhala: ශාන්ත මරියා ආසන දෙව් මැදුර Śānta Mariyā Āsana Dev Mædura) is the seat of the Roman Catholic Diocese of Jaffna located in Gurunagar, a suburb of Jaffna in northern Sri Lanka.

[4] The prince's ashes were buried at the spot where he was killed and a chapel, which later served as the foundation for the construction of the present cathedral, was built.

[7] The church was built on the site of a thatched house that had previously served as a worshipping place for Jaffna's Catholics.

[6] By the early twentieth century the church, which was now a cathedral, had become too small to accommodate all its worshippers.

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