Sage · All traditions · Northeast India · Assam
Shantanu (sage of the Kalika Purana)
The sage husband of Amogha in the Brahmaputra origin story, not the Kuru king of the Mahabharata; he brings the child Lauhitya into being.
Sources: Pot-Pourri: Son of Lord Brahma — The Sentinel (Assam) · see Shantanu (sage of the Kalika Purana)'s web