True
Albert Einstein married his cousin, Elsa Einstein.
Spread on: TikTok and other social media, August 2026
The real story
He did. Elsa was his double cousin: a first cousin on his mother's side and a second cousin on his father's side. She became his second wife after his divorce from his first wife, Mileva Marić.
The fact-checker's verdict: “True”. Our label never goes further than theirs.
How to spot it
Family history claims about famous people are easy to check in reputable biographies.
The receipts
Did Albert Einstein marry one of his cousins? ↗
Snopes · 2026-08-11
