From Gineipaedia, the Legend of Galactic Heroes wiki
Wagner (796 UC (487 IC / 3596 CE))
|Status:||Deceased (796 UC (487 IC / 3596 CE))|
|Played by:||Osamu Kato|
Wagner (Japanese: ワグナー) was a civilian who lived on an unnamed Imperial frontier planet during its invasion by the Free Planets Alliance in 796 UC (487 IC / 3596 CE). (LOGH: 'Liberation of the Frontier Zone')
Wagner's full name is not mentioned in the anime, but 'Wagner' is not usually a given name in German, so it may be both his and Therese's surname.