No, Barbara Bush was not related to Aleister Crowley. Barbara Bush was the wife of George H. W. Bush, the 41st President of the United States, and the mother of George W. Bush, the 43rd President. She was a prominent figure in American politics and public service.
Aleister Crowley, on the other hand, was a British occultist, writer, and ceremonial magician. He was known for his controversial practices and writings on the occult. There is no familial connection between Barbara Bush and Aleister Crowley.
The idea that they might be related likely stems from conspiracy theories or misinformation. It’s important to rely on credible sources when exploring such claims.