Wikipedia
Manuchehri
Abu Najm Ahmad ibn Ahmad ibn Qaus Manuchehri , a.k.a. Manuchehri Damghani, was a royal poet of the 11th century in Persia.
He was from Damghan in Iran and he is said to invent the form of musammat in Persian poetry and has the best ones too. He traveled to Tabarestan and was admitted to the court of King Manuchihr of Ziyarid dynasty and that's where he got his pen name. He later was a royal poet in the court of Sultan Shihab ud-Dawlah Mas'ud I of Ghazni son of Mahmud of Ghazna.
He has left behind a divan. His works were extensively studied by A. de Biberstein-Kazimirski in 1886.
He died in 1040 CE.