What does Lothair mean?
Lothair \l(o)-thair\ as a boys' name is of Old German derivation, and the name Lothair means "famous warrior; soldier of the people". Lothair is a derivative of Lothar (Old German). Lothair is also a derivative of Luther (Old German).
Lothair is an unusual given name for men. Lothair is an equivalently unusual last name too for both adults and children. (2000 U.S. Census)
Luther is the only popular alternative form of Lothair (#unlisted) appearing in the Top 1000. These boy names were at the height of their popularity during 1880-1889 (usage of 0.932%) and have become significantly less popular since, with Luther becoming less fashionable. Below is a graphed analysis of the popularity of the boy name Lothair and corresponding names. (2014 Birth Statistics)