
1) Fictional robot 2) German boy name 3) Masculine given name
Found on
https://www.crosswordclues.com/clue/lothar
[Metabarons] Lothar is a fictional robot in the Metabarons universe. He is presented firstly being in service of the Metabaron (the Nameless), who asks Tonto to narrate to him of his master`s history. Tonto who has been served the Metabarons for decades, unlike Lothar who is relatively new in the Metabaron`s ownership, tells the saga to him...
Found on
http://en.wikipedia.org/wiki/Lothar_(Metabarons)

Carolingian king of France from 954 to 986, the eldest son of Louis IV. He was elected king without opposition after his father`s death but was ... [4 related articles]
Found on
http://www.britannica.com/eb/a-z/l/75

king of Italy in the chaotic post-Carolingian period. He was named after his great-grandfather Lothar II and ruled as co-king with his father, Hugh ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/l/75

Lothar, brother of Ecbert, was king of the Heptarchy in 673.
Found on
http://www.probertencyclopaedia.com/browse/CXL.HTM
No exact match found.