Is Ringo Starr half Jewish

From what I could gather by reading the relevant source-material, the answer is no. She is "half Jewish," but the "half" is on her father's side, not her mother's side. Torah-law states that one's mother is the deciding factor. One with a Jewish father is not considered Jewish or half-Jewish. For further inquiry, see the attached Related Links.

Answer:

Sylvester Stallone's maternal grandfather was Jewish. Sylvester's other grandparents were not Jewish. Sylvester was raised Catholic and remains Catholic.