Complex sentence: Rafi-ul Darajat, son of Rafiu-Shan (Azimu-sh-Shan's brother) was the tenth mughal emperor and succeeded Furrukhsiyar in 1719, proclaimed Badshah by the Sayyid brothers.
Split into simpler sentences: Rafi-ul Darajat, son of Rafi-us-shaan (brother of Azim-us-shaan) was the 10th mughal emperor. He succeeded Furrukhsiyar in 1719, being proclaimed Badshah by the Sayyid brothers.