Group A runes were most common in Viking Age Denmark
Old Norse Klakkr (m.)
Klakkr, an original byname from Old Norse klakkr, probably a ‘peg on saddle on which baggage is hung’, appears in a few recordings in West Scandinavia. The name is related to the byname Klakka, which appears early and often in West Scandinavia. Klak is also recorded in Sweden and found in some Danish place-names.
Klakkr is the first element of Claxby, Lincolnshire.