Some fascinating history about him from Wikipedia:
Reza Khan [the father of the person in the post] believed if fathers showed love for their sons, it caused homosexuality later in life, so to ensure his favourite son was heterosexual, he denied him love and affection when he was young, though he later became more affectionate toward the Crown Prince when he was a teenager.
As Shah, Mohammad Reza [the person in the post] constantly disparaged his father in private, calling him a thuggish Cossack who achieved nothing as Shah. In fact, he almost airbrushed his father out of history during his reign, to the point of implying the House of Pahlavi began its rule in 1941 rather than 1925.