MallowbyNames

Marylu

MAIR-ee-loo · Combination of Mary and Lu, with Mary meaning 'beloved' or 'sea of bitterness' and Lu a short form of Louise, meaning 'famous warrior'.

Peak popularity
1938
Usually for
Girls
Trend
Rising since 2022

A 1930s favorite, climbing again.

Popularity of Marylu since 1921

Babies named Marylu per year in U.S. Social Security records. Raw births topped out in 1953, but relative to how few babies were recorded back then, Marylu's real moment was 1938.

9182719602000Most births 1953Girls
Data table (by decade)
DecadeGirls
1920s67
1930s125
1940s134
1950s177
1960s80
1970s33
1980s72
1990s87
2000s81
2010s66
2020s10

Meaning & origin

Marylu is a compound feminine name blending Mary and Lu, a short form of Louise. It first appeared in U.S. records in 1921 and reached its peak year of use in 1938, when it was most often recorded. After decades of decline, the name has shown a small resurgence: its trajectory has been rising since 2022, though it still does not rank among the top 1,000 names and records 1-in-N births too rare to calculate. The name exemplifies the early 20th century trend of combining two popular names, especially common in the American South. Today, Marylu remains a rare and distinctive choice, with a sound that feels both vintage and accessible.

Marylu is a compound name formed from Mary and Lu, a clipped form of Louise. Mary is of Hebrew origin, derived from Miryam, with debated meanings including 'beloved' and 'sea of bitterness'. Louise is the French feminine form of Louis, from the Germanic name Chlodovech, meaning 'famous warrior'. This type of compound name was particularly fashionable in the United States during the early to mid-20th century, especially in the South.

Nicknames & variants

Nicknames: Mary, Lu, Mimi

Variants: Mary Lou, Mary-Lou

Sibling names for Marylu

Names that share Marylu's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

M is for Marylu, our favorite little girl.

M is for Marylu…”

In a Mallowby alphabet book, Marylu's letter becomes Marylu's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Marylu's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Marylu mean?
Marylu is a combination of Mary and Lu. Mary has several possible meanings, including 'beloved' from Hebrew, while Lu is typically a short form of Louise, meaning 'famous warrior' in Germanic.
How popular is Marylu today?
Marylu has not ranked in the U.S. top 1,000 names in recent decades. Its peak year was 1938, and it has been rising slightly in use since 2022, but remains very rare.
Is Marylu a boy or girl name?
Marylu is almost exclusively used as a girl's name, given its components Mary and Lu (from Louise) which are traditionally feminine.