Skandapurana 16.21.15

16.21.15

devalo bhagavānyogī pratyūṣasyābhavansutāḥ ..
bṛhaspatestu bhaginī bhuvanā brahmavādinī .. 15 ..

The blessed yogi Devala was the son of Pratyūṣa.
The sister of Bṛhaspati was Bhuvanā, who expounded the Veda;