And Ted Cruz's real first name is Rafael. Rafael Edward Cruz.
Piyush, according to Wikipedia, is a Hindi name which means nectar or ambrosia.
"Ambrosia is sometimes depicted in ancient art as distributed by a nymph labeled with that name," [according to Wiki]
Well ok, I guess if I was afraid the liberal media PC jackals might depict me as a Greek nymph surrounded by bees and hummingbirds I'd change my name to Bobby too. But other than that I can't think of any good reason why they don't use their real names -- especially given the rich diversity of multicultural (and metrosexual in the case of Donald Trump) Republican nominees to chose from. Can you?