What does Lothair mean?
Lothair /lo-thair/ as a boys' name is of Old German derivation, and the name Lothair means "famous warrior; soldier of the people". Lothair is a version of Lothar (Old German) with the suffix -ir. Lothair is also a derivative of Luther (Old German).
How popular is Lothair?
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 (not ranked) appearing in the Top 1000. Other variants, like Lotario, are seldom used. This form of Lothair was popular as a baby name during 1880-1889 (adoption of 0.93%) and has become significantly less popular since. Below is a graphed analysis of the popularity of the boy name Lothair and corresponding names. (2014 Birth Statistics)