Conversation so far:
Why did Ludwig Wittgenstein's brothers commit suicide?
Psychiatrist Michael Fitzgerald argues that Karl was a harsh perfectionist who lacked empathy, and that Wittgenstein's mother was anxious and insecure, unable to stand up to her husband.
When did Ludwig Wittgenstein's brother Hans commit suicide?
Hans died in mysterious circumstances in May 1902, when he ran away to America and disappeared from a boat in Chesapeake Bay, most likely having committed suicide.

Question: When did his other brother commit suicide?
Self-contained rewrite: When did Ludwig Wittgenstein's other brother Rudi commit suicide?