MallowbyNames

Shelagh

SHEE-lah · Of uncertain origin; possibly a variant of Sheila or an Irish Gaelic name meaning 'blind'.

Peak popularity
1950
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Shelagh since 1942

Babies named Shelagh per year in U.S. Social Security records.

715221960198020002020Most births 1950Girls
Data table (by decade)
DecadeGirls
1940s36
1950s114
1960s178
1970s80
1980s64
1990s38
2000s0
2010s0
2020s0

Meaning & origin

Shelagh is an Irish variant of Sheila, itself an anglicization of the Gaelic name Síle. It entered U.S. records in 1942 and saw its peak usage in 1950, a pattern common among Irish names during the mid-20th century. The name has since declined in use and does not appear in the current top 1000. Shelagh's trajectory has been stable at very low numbers in recent decades, reflecting its status as a vintage or niche choice. Its top states of use are generally not concentrated in any particular region, suggesting it has been used sporadically across the country rather than in specific ethnic enclaves. Despite its rarity, Shelagh retains a distinctively Irish character and may appeal to families seeking a name with Gaelic roots and a classic mid-century feel.

Shelagh is an Irish variant of Sheila, itself an anglicization of the Irish name Síle, which is a Gaelic form of Cecilia. The name Cecilia derives from the Latin 'caecus' meaning 'blind'. Shelagh was particularly popular in Ireland and among the Irish diaspora in the 20th century, peaking in use around the 1950s in the United States.

Nicknames & variants

Nicknames: Shel, Sheila

Variants: Sheila, Síle, Sheelagh

Sibling names for Shelagh

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

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

S is for Shelagh, our favorite little girl.

S is for Shelagh…”

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

Make Shelagh's book

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Questions parents ask

What does the name Shelagh mean?
The meaning of Shelagh is uncertain; it is most commonly considered an Irish variant of Sheila, which ultimately derives from the Latin Cecilia meaning 'blind'.
How popular is the name Shelagh?
Shelagh peaked in U.S. popularity in 1950, but it has no current rank and is not among the top 1000 names as of 2025.
Is Shelagh a boy or girl name?
Shelagh is exclusively a girl's name.