1. The Peacock Penance of Goddess Parvati (Mayil Penance): While Lord Shiva was imparting the supreme esoteric wisdom of the Panchakshara Mantra and Brahmavidya to Goddess Parvati, her attention was fleetingly captivated by a flock of dancing peacocks. Displeased by her lapse of focus, Shiva cursed her to be born on Earth as a peahen (Mayil). Parvati descended to the Punnai forest (Punnai Vanam) at Mylapore, installed a Shivalingam under a Punnai tree, and performed intense penance. Lord Shiva appeared, released her from the curse, and united with her. The settlement was named Mayilappur ('Town of Peacocks', Mylapore) and Goddess Parvati became Karpagambal ('Wish-Yielding Mother').
2. The Decapitation of Brahma's Fifth Head (Kapaleeshwarar): Creator Lord Brahma possessed five heads, mirroring Lord Shiva, which inflated his cosmic ego (Ahamkara). To sever Brahma's pride, Lord Shiva plucked off Brahma's fifth head with his fingernail. Brahma performed rigorous penance at Mylapore to expiate his pride. Lord Shiva pardoned him, restored his creator powers, and manifested here as Kapaleeshwarar ('Lord of the Skull / Kapalam').
3. The Miracle of Angam Poompavai (7th Century CE): Sivanesan Chettiar, a wealthy merchant of Mylapore, dedicated his daughter Poompavai to Saivite saint Thirugnanasambandar. Before the marriage could occur, Poompavai died of a cobra bite. Sivanesan cremated her body and preserved her ashes in an earthen urn (Kudam). When Sambandar arrived, he placed the urn outside Kapaleeshwarar Temple and sang the 11-stanza Poompavai Padikam ('Madditta Punnaiyang Kanal Madaye...'), asking how Poompavai could depart without witnessing Kapaleeshwarar's grand monthly festivals (Panguni Uthiram, Karthigai Deepam, Margaazhi Thiruvathirai). With each stanza, her body reconstituted, and on the 11th verse, Poompavai emerged alive from the urn in full maidenhood.
4. Vayilar Nayanar's Heart Temple (Manasika Puja): Mylapore is the birthplace of Vayilar Nayanar, one of the 63 Nayanmars. Lacking wealth to build a stone temple, Vayilar constructed an imperishable, luminous temple inside his heart with mindfulness as the sanctum, love as the lamp, and contemplation as the Abhishekam. Lord Kapaleeshwarar granted him divine liberation (Moksha).