Conversation so far:
When did Tristan change Tristan Tzara's name?
in summer of 1915, he was signing his pieces with the name Tristan.
Why did he change his name?
Vinea also stated that Tzara wanted to keep Tristan as his adopted first name.
Are there any other interesting aspects about this article?
Tzara wanted to keep Tristan as his adopted first name, and that this choice had later attracted him the "infamous pun" Triste Ane Tzara (French for "Sad Donkey Tzara").

Question: Did he have any other names?
Self-contained rewrite: Did Tristan Tzara have any other names other than Triste Ane Tzara?