Leffler
A surname most likely from a Germanic personal name, probably meaning “descendant of the one of peace.”
The #6,542 most common surname in the United States (2010 Census) — about 1 in every 59,649 Americans shares it.
Etymology
This surname is generally treated as a German patronymic or name-based surname, connected with a short form of an old Germanic personal name built on the element liud, meaning “people” or “folk.” Kuhns glosses Leffler as deriving from a name made with liud + frith, the latter meaning “peace,” so the underlying sense would be something like “people-peace” or “peaceful among the folk.” In practice, surnames of this type usually arose from a given name rather than from a literal occupation or place-name.
History
The surname appears in German-speaking areas and in later emigrant communities, especially where German surnames were adapted into English spelling. The form Leffler sits alongside related spellings such as Loeffler and may reflect regional pronunciation or later Anglicization. Because the cited source excerpt is brief and incidental, the exact path from the older personal name to the modern surname cannot be pinned down with certainty.
Origin
Regions
Variant spellings
Fun fact
The old name element behind this surname, liud, is the same Germanic root found in medieval names like Ludwig.
From the historical record
“LIUD, people, warriors ; Liider, Luther, Leiter, Lu'hr, Lauer (Liud -f hari); Leibert (Liud -f- beraht); dim. (z), Liess ; (k), Leidig; doub. st. ab., Licht, Lichti (Swiss), (Liud + gar); pat., Leffler (from Liud -f frith). MAG, power ; dim. (1), Meili (Swiss); (z), Matz. MAN, man ; sing. st. ab., Mann ; dim. (k +…”
— Studies in Pennsylvania German Family Names