Which Persian poet wrote the Shahnameh, the Book of Kings?

Abolqasem Mansour bin Hassan Tusi (940–1025), better known by his pen name Ferdowsi, was a Persian poet who is notable for being the author of the Shahnameh, which is one of the world's longest epic poems created by a single poet, and the greatest epic of Persian-speaking countries. Ferdowsi is celebrated as one of the most influential figures of Persian literature and one of the greatest in the history of literature.