Muhammad ibn Ali Rawandi

Muhammad bin Ali Rawandi (), was a Persian historian who wrote the "Rahat al-sudur wa ayat al-surur" during the fall of the Great Seljuk Empire and the subsequent invasion by the Kharwarzmian empire.
Rawandi was from a scholarly family from Rawand near Kashan, and studied Hanafi fiqh in Hamadhan from 1174 to 1184. As a calligrapher, Rawandi was brought to court to craft a "Quran" for Toghrul III and gained the sultan's favor. After Toghrul's incarceration, Rawandi gained the patronage of Shihab al-Din al-Kashani, who urged him to write the "Rahat al-sudur". Rawandi had intended to dedicate his book to Süleymanshah II, but dedicated it to Kaykhusraw I, following the latter's accession as Sultan of Rum. Later the "Rahat al-sudur" was translated into Turkish during the reign of Murad II.
Modern era.
In 1921, the "Rahat al-sudur" was published by Muhammad Iqbal. It was recognized by Iqbal, Edward G. Browne and Mirza Muhammad Qazwini as a source in other texts, namely "Jami al-tawarikh", "Rawdat al-safa" of Mir Kwand and "Tarikh-i guzida" of Hamdallah Mustawfi.