Question

शांतनु कौन थे ??????????????????
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Answer 1

Answer:

He was the grandfather of pandyas

Answer 2

Shantanu was the king of Hastinapur who belongs to Kuru clan.

Mahabharatha has reference to him as husband of Mata Ganga whose 8th son was Devratha(bheeshma). He also has another wife Satyavathi.

Basically Mahabharatha starts with his reference.