"Looking for a name that is supremely familiar, fits in with current naming trends, and isn’t in the top 1000? Consider the literary Louisa.
Louisa, of course, is a Latinate feminine version of the royal French Louis, which originally comes from the German Ludwig and thus mean “famous warrior.” Louisa (usually pronounced loo-EE-zuh) is the spelling most common in English. In Spanish, Italian, or Portuguese, the name is spelled Luisa and pronounced with an S sound (loo-EE-suh).
Some feminizations of male names seem rather hard for a girl to wear — take Jamesina, Thomasina, or Henrietta for example. They’re either too frilly or downright silly. But Louisa has more in common with effortless Josephine, Georgia, Charlotte, or Daniela. It’s a pretty girls’ name in its own right.
Surprisingly enough, the name has never been extremely popular in the U.S. Name data is only available since 1880, but the highest it ever charted was #119 in 1881. It hasn’t been in the top 200 any time this century, and it hasn’t even been in the top 1000 since 1969. The French Louise fared much better. As a first name, it was in the top 50 from 1880 until 1937, and it didn’t exit the charts entirely until 1991. According to a survey done by Name Nerds, Louise is the 7th most popular girls’ middle name in the U.S. In fact, chances are good that you have a mother, aunt, grandmother, or friend with that middle name. If you’re looking for a way to honor her, and if Louise sounds rather old-ladyish to you, then Louisa might be a good way to update it.
Louisa fits in well with several current naming trends. Nineteenth-century literary names are in. Current chart-toppers or chart-climbers include Emily, Emma, Isabella, Charlotte, Amelia, Caroline, Lydia, Clara, Alice, Eleanor, Eliza, and Josephine. Spanish and Italian names are also fashionable. Spell the name Luisa, and she seems like a fitting sister for Sofia, Gianna, or Gabriella. Additionally, it is remarkably similar to Lucy and Lucia, respectively ranked #135 and #311, and both on the rise.
Louisa has a host of literary and historical namesakes, including too many princesses and duchesses to list."