
1) German surname
Found on
https://www.crosswordclues.com/clue/keppler

Keppler is a name of German origin. Known people with this name include: == See also == ...
Found on
http://en.wikipedia.org/wiki/Keppler

The USS Keppler was an American Gearing Class destroyer of 2400 tons displacement launched in 1946. The USS Keppler was powered by four boilers providing a top speed of 35 knots. She carried a complement of 350 and was armed with six 5 inch guns; twelve 40 mm anti-aircraft guns; eleven 20 mm anti-aircraft guns and ten 21 inch torpedo tubes arranged...
Found on
http://www.probertencyclopaedia.com/browse/RK.HTM
No exact match found.