Vonath was a Romulan centurion of the 23rd century. He became romantically involved with the Orion Marta, and the pair launched an attempted conquest of Canopus IV, though Marta was captured by Starfleet (Decipher RPG module: Narrator's Guide) in 2266. Vonath was considered as a potential architect of a hypothetical plot to free her (Decipher RPG module: Worlds).

It is not stated if this conquest was successful or not.
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