Louie
A surname that usually comes from the French name Louis or Louise, ultimately meaning “famous in battle.”
The #4,175 most common surname in the United States (2010 Census) — about 1 in every 36,387 Americans shares it.
Etymology
Louie is most likely a surname taken from a personal name, especially the French Louis or Louise. Those names go back to an old Germanic name built from elements meaning “fame” and “battle,” often explained as “famous warrior.” In some cases, Louie may simply reflect an Anglicized spelling of a French or other European family name rather than a single fixed origin.
History
As a surname, Louie is found in English-speaking records largely through immigration and Anglicization of European names, especially French forms. The spelling also overlaps with the familiar given name Louie, so some family lines may have adopted it from a nickname or patronymic source. In modern US usage it is relatively uncommon but widely recognizable.
Origin
Regions
Variant spellings
Fun fact
The same old name-group that produced Louis and Louise also lies behind several royal names in Europe, which helped keep the root popular for centuries.
From the historical record
“Sia ■ Louie —- — I'^eggy ■ Onny”
— Varieties and Synonymes of Surnames and Christian Names in Ireland