MallowbyNames

Mortimer

MOR-ti-mer · dead water or still water

Peak popularity
1882
Usually for
Boys
Trend
Declining since 2020

Declining since 2020.

Popularity of Mortimer since 1880

Babies named Mortimer per year in U.S. Social Security records. Raw births topped out in 1916, but relative to how few babies were recorded back then, Mortimer's real moment was 1882.

3061911880192019602000Most births 1916Boys
Data table (by decade)
DecadeBoys
1880s99
1890s93
1900s97
1910s645
1920s603
1930s187
1940s75
1950s59
1960s39
1970s17
1980s0
1990s0
2000s0
2010s10
2020s19

Meaning & origin

Mortimer is a name with deep Norman French roots, originally a surname referring to a location named 'dead water'. It entered the English-speaking world through the influential Mortimer dynasty, which played a pivotal role in medieval English politics. In the United States, the name saw its highest usage in the 1880s, peaking in 1882, though it never ranked in the top 100 nationally. Since 2020, its trajectory has been falling, and in 2025 no births were recorded to assign a rank or one-in-N frequency. The name has a distinctly vintage, upper-crust feel, often associated with characters in literature and media, making it a choice for parents seeking an antique, distinctive name.

Mortimer is a surname of Norman French origin, derived from the place name Mortemer in Seine-Maritime, France. The place name itself comes from the Old French words 'morte' (dead) and 'mer' (sea, lake), referring to a stagnant body of water. The name was brought to England after the Norman Conquest and became prominent through the powerful Mortimer family, including Roger Mortimer, 1st Earl of March, who was a de facto ruler of England in the 14th century. As a given name, Mortimer saw modest use in the 19th and early 20th centuries but has since declined in popularity.

Nicknames & variants

Nicknames: Mort, Morty

Sibling names for Mortimer

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

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

M is for Mortimer, our favorite little boy.

M is for Mortimer…”

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

Make Mortimer's book

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

Questions parents ask

What does the name Mortimer mean?
Mortimer is of Norman French origin, meaning 'dead water' or 'still water', from the place name Mortemer.
Is Mortimer a common name today?
No, Mortimer is very rare in the United States. It ranked outside the top 1000 for many years, with no recorded births in recent years. Its peak popularity was in 1882.
Is Mortimer a boy or girl name?
Mortimer is traditionally a masculine name, though it is occasionally used for girls.