Matsya Purana 50.45

50.45

tattasya śantanu tvaṃ hi prajābhiriha kīrtyate.
tato vṛṇuta bhāryārthaṃ śantanurjāhnavīṃ nṛpaḥ.. 50.44 ..

King Śantanu was a very learned physician, and was highly accomplished. It is laid down in the books on medicine that by his mere touch even the patient suffering from a most dreadful disease would be instantly cured and become young. He was for that reason known as Śantanu. He married the sacred Ganges.—42-44.