Namesakes
Chlothar I the Old
(a.k.a. Lothair) (m) 497-561 
Frankish and French Kings 511-561
Chlothar II the Great
(a.k.a. Lothair) (m) 584-629
Frankish and French Kings 584-629
Chlothar III
(a.k.a. Lothair) (m) 652-673
Frankish and French Kings 656-673
Lothair
(m) 941-986
Frankish and French Kings 954-986
Lothar I
(a.k.a. Lothair) (m) 795-855
German Kings and Holy Roman Emperors 817-855
Lothar III of Saxony
(a.k.a. Lothair) (m) 1075-1137
German Kings and Holy Roman Emperors 1125-1137