Skandapurana 16.278.5

16.278.5

.. īśvara uvāca.. ..
āsītpūrvaṃ dvijo devi nāmnā khyātaḥ śamīmukhaḥ ..
gārhasthye vartamānasya tasya putro vyajāyata ..
vaiśākha iti nāmnā'sau raudrakarmā vyajāyata .. 5 ..

The Lord said: / Formerly, O goddess, there was a brahmin renowned by the name Śamīmukha. / While he was leading the householder life, a son was born to him; / born with the name Vaiśākha, he became one of cruel deeds.