The Sleeper Ship Gallia that came to Sirius was a later creation compared to the other Sleeper Ships, as the original vessel was destroyed during the surprise attack that sparked the Alliance/Coalition war, and was then sent to the Sirius Sector from the Sol System in order to preserve the French culture, landing near Planet New Paris in the Ile-de-France system in 84 AS.
Sleeper Ship Gallia carried the citizens and important figures from the nation of France, who later founded the House of Gallia, which suffered from many civil wars in its early days leading to many reforms.