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").
Did he have any other names?
the variations Tristan Tara and Tr.
Tzara, in 1913-1914 .
Did he ever have any issues because of his name?
CANNOTANSWER.
Did anyone else use his name after he used it?
Samy Rosenstock legally adopted his new name in 1925.
What else is important about his name?
Tzara himself had explained his chosen name was a pun in Romanian, trist in tara, meaning "sad in the country".

Question: Did his name have any other meanings?
Self-contained rewrite: Did Tristan Tzara's name have any other meanings other than "sad in the country"?