In 1950s Devon, UK, my family had a princess and her daughter staying with them. (I wasn't born then.)
Apparently she was the daughter of one of the Shah's brothers.
She was known as Peri (Pari?) and her daughter, who looks to be around 18m - 2yrs old in the photographs was Sori / Sauri / Soraya.
I have had a look through the genealogical table on royalark but I can't find any obvious matches, and wonder whether anyone could throw further light on who, exactly, she might have been.