Shiva Purana

siva.sh/siva-purana/saturda-samhita/5/29

तत्रापि मम ते पुत्रा भविष्यन्ति सुयोगिनः ।। प्लक्षो दार्भायणिश्चैव केतुमान् गौतमस्तथा ।। २९ ।।

sanskrit

There too, experts in Yoga, will be my sons viz. Plakṣa, Dārbhāyaṇi, Ketumān and Gautama.

english translation

tatrApi mama te putrA bhaviSyanti suyoginaH || plakSo dArbhAyaNizcaiva ketumAn gautamastathA || 29 ||

hk transliteration by Sanscript