Some unknown facts about Albert Einstein are-
1. He forfeited his German Citizenship at the age of sixteen years.
2. He married the only female student in his physics classroom. He later married his first cousin.
3. He was a civil rights activist.
4. Albert's son developed some psychiatric disease such as schizophrenia and was kept in an institution most of his life.
5. He had a rocky friendship with Fritz Haber who was a German chemist.