The name is attested as 'Honigar' from the 13th century in Bavaria, and was borne by members of the nobility of the Holy Roman Empire and by the family that founded the Henninger Brewery.
Seeberg lies along the modern border of the Czech Republic and Bavaria in the Eger (now called Cheb) and Planá region.
Lieutenant General Emmanuel Henninger, Freiherr von Eberg, was one of the regimental commanders at the Austrian victory at Custoza, Italy in 1866.
His father Johann, also an Austro-Hungarian Major General of Army, had been granted the title of Freiherr von Eberg just prior to his death.
In Bavaria, a branch of Honigar von Seeberg's family had migrated north from Vohburg to Rothenburg ob der Tauber in the early 15th century.