The ten Prachetasas had one son between them, viz., the Prajapati called by the name of Daksha. This last has two names in the world, viz., Daksha and Ka.
दशानां तनयस्त्वेको दक्षो नाम प्रजापतिः। तस्य द्वे नामनी लोके दक्षः क इति चोच्यते॥