The prajāpati Aṅgirā had two wives, named Svadhā and Satī. The wife named Svadhā accepted all the Pitās as her sons, and Satī accepted the Atharvāṅgirasa Veda as her son.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
प्रजापतेरङ्गिरसः स्वधा पत्नी पितॄनथ । अथर्वाङ्गिरसं वेदं पुत्रत्वे चाकरोत्सती
prajāpateraṅgirasaḥ svadhā patnī pitṝnatha | atharvāṅgirasaṃ vedaṃ putratve cākarotsatī
SB 6.6.19