According to one legend, he was the son of Uma and Maheswar. He was burn only to put an end to the astocities of Taraka, a cruel demon, who perpetrated countless wicked acts ondevas for years. When the entire amarakula was totally debilitated, they sought help of Lord Srimannarayanan, who counselled that the son born to Lord Siva alone would kill that remorseless Danava. But Siva was doing penance after the self - immolation of Sati, reborn as Parvathi and was in full bloom at this time. and she was offering worship to Lord Siva at the behest of her father Himavan.
They utilised the services of manmatha to awaken his love instincts. Poor Manmatha was burnt to ashes, when the Lordopened his third eye as punishment for disturbing his tapes, yet in the end Siva was wedded to Parvathi and the son begotten to them became the Chief-marshal of Amarasena, who vanquished Taraka; and devas breathed freely. Devendra gave his doughter Devasena to the valorous Subrafmanya in wedding then. This legend was immortalised by Kalidas in his Kumarasambhava.