# Guilfoyle (surname)

Source: https://namelineage.com/surname/guilfoyle/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname from Irish.

| Field | Value |
|---|---|
| Origin | Irish |
| Type | patronymic, formed from a father’s (or ancestor’s) given name |
| People in the US (2010 Census) | 1,751 |
| US rank (2010) | 16,427 of 162,253 |
| How often | about 1 in every 176,325 people |
| Change since 2000 | +8.4% (1,615 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | Gilfoyle, Guilfoil |

## Etymology

Anglicized form of Irish Mac Giolla Phóil (“son of St. Paul's follower”), from mac + giolla + Pól.

## Who carries it

Share of people named Guilfoyle in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 92% |
| Hispanic or Latino (any race) | 3.3% |
| Asian and Pacific Islander | 1.0% |
| Two or more races | 2.7% |

## Where

Wikidata records people named Guilfoyle in the United States.

## People named Guilfoyle

- Paul Guilfoyle, American actor (born in 1949)
- Kimberly Guilfoyle, American attorney and political campaign advisor (born 1969)
- Paul Guilfoyle, American actor born in 1902

## Similar surnames

Guilbeault, Gilfillan.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.