The name Keller is of German origin, derived from the Middle High German word 'keller', meaning 'cellar' or 'basement'. It was traditionally an occupational surname given to cellar masters or those who lived near a wine cellar. The name first appears in historical records during the 14th century. Today, Keller is used as both a surname and a given name, though it remains more common as a surname. Notable individuals with the last name Keller include Thomas Keller, a renowned chef, and Paul Keller, an American musician.
"Over the span of nearly six decades, the name Keller experienced significant fluctuations in popularity, with peaks in recent years."