Jamasp

Jamasp was an Iranian philosopher in the time of Zarathustra.

Jamasp was the Grand Vizier of Gushtasp.

The book Jamasp Namag is about him.

More info needed.

Sources

دوستخواه، جلیل: اوستا، کهن‌ترین سرودهای ایرانیان، چاپ دوم، انتشارات مروارید، تهران ۱۳۷۴.