Was Cary Grant Jewish? If ONLY the answer was simple...
Theory #1: Grant's mother, Elsie Kingdom, wasn't his birth mother. His real mother, a seamstress named Lilian that worked with his father, was possibly Jewish.
Theory #2: Grant refused a role in the film "Gentleman's Agreement", about a gentile trying to pass for a Jew, because he was Jewish, or thought he looked Jewish.
Theory #3: Grant's father, Elias Leach, was partly Jewish.
Theory #4: Grant donated money to Israel in the name of his "dead Jewish mother".
Theory #5: Grant, who was born in England, was circumcised at birth, an uncommon practice for non-Jews at the time.
In other words, Cary Grant is perhaps, maybe, could be, probably a Jew. But until there's real proof, all we can say is: