---
name: "Dermot O'Neill"
canonical: "https://film.one/person/dermot-oneill-1253170"
fi1m_id: "dermot-oneill-1253170"
imdb_id: "nm4336636"
tmdb_id: 1253170
roles: ["Actor"]
reviewed_on_fi1m: 1
average_as: "actor"
average_over: 1
updated: "2026-10-07T15:37:00.992964+00:00"
licence: "© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL."
---

# Dermot O'Neill

## Identity

Dermot O'Neill

- **Canonical:** https://film.one/person/dermot-oneill-1253170
- **Type:** Person
- **Fi1m ID:** dermot-oneill-1253170
- **IMDb ID:** nm4336636
- **TMDB ID:** 1253170
- **Same entity:** https://www.imdb.com/name/nm4336636/, https://www.themoviedb.org/person/1253170

Actor.

## Details

- **Work:** Actor
- **Elsewhere:** https://www.imdb.com/name/nm4336636/, https://www.themoviedb.org/person/1253170

## Streaming the US now

- **Apple TV:** [*Mrs Brown's Boys*](https://film.one/tv/mrs-browns-boys.md) (45)

For United States; add `?region=XX` for another country.

## Biography

Dermot O'Neill is an Irish actor. He is known for portraying Grandad Brown (also referred to as Harold Brown) in the BBC sitcom *Mrs. Brown's Boys*, appearing in the original stage-derived series from 2002, the BBC television series from 2011 onwards, live tours, and the 2014 film *Mrs. Brown's Boys D'Movie*.

O'Neill began working with the production after being recruited while employed as Brendan O'Carroll's window cleaner. His other screen credits include the role of the One Legged Beggar in the 2003 film *Spin the Bottle*.

*Sources: imdb.com, comedy.co.uk.*

## On Fi1m (1)

- *Mrs Brown's Boys* (2011), Fi1m 45, as Grandad Brown — [page](https://film.one/tv/mrs-browns-boys.md)

## Complete filmography (10)

Every credit, newest first. Titles without a page can be requested for review on the HTML page.

- *Mrs. Brown's Boys New Year Special – New Year, New Mammy* (2023), as Grandad Brown
- *Mrs Brown's Boys Live Episode: Mammy Sutra* (2016), as Grandad Brown
- *Mrs. Brown's Boys D'Movie* (2014), as Grandad Brown
- *Mrs. Brown's Boys Live Tour: Mrs. Brown Rides Again* (2013), as Grandad Brown
- *Mrs. Brown's Boys Live Tour: Good Mourning Mrs. Brown* (2012), as Grandad
- *Mrs Brown's Boys* (2011), series, as Grandad Brown — Fi1m 45, [page](https://film.one/tv/mrs-browns-boys.md)
- *Mystics* (2003), as Bosco's Gang Member
- *Spin the Bottle* (2003), as One Legged Beggar
- *Brendan O'Carroll: How's Your Jolly Roger?* (1995), Actor
- *Mrs. Brown's Boys: Crackin' Christmas*, as Grandpa Brown

---
© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL. Canonical: https://film.one/person/dermot-oneill-1253170