Complex sentence: Shah Rukh was a contemporary of Mirza Mohammad, who claimed to be Soleyman III of Safavid, son of shah Soleyman I Safavi's daughter and a clergy man.
Split into simpler sentences: Shah Rukh was a contemporary of Mirza Mohammad. This man claimed to be Soleyman III of Safavid, son of shah Soleyman I Safavi's daughter and a clergy man.