Ireland Crime

Named as

Convicted, accused

Born

2006, from the ages reported

Offences

Murder, Violent disorder

Where

Co. Dublin

Reporting

13 reports, 6 Nov 2024 to 17 Feb 2025

Outlets

rte.ie, irishmirror.ie, thejournal.ie, irishtimes.com

• Appeals dismissed in murder of gunman at Blanchardstown restaurant Murder · Co. Dublin

  On Christmas Eve 2023, at about 8pm, Tristan Sherry, a 26-year-old Irish man from Finglas, and a second gunman entered Browne's Steakhouse on Main Street, Blanchardstown, Dublin 15, where Jason Hennessy Snr, a 48-year-old Irish man from Corduff, was dining with about 30 family and friends. Sherry shot Hennessy Snr in the neck and upper body before being disarmed and beaten to death by members of the Hennessy group; Hennessy Snr died in hospital on 4 January 2024. Seven people were charged over Sherry's death, including Michael Andrecut, David Amah, Noah Musueni and Wayne Deegan with murder, and Jonas Kabangu, Diarmuid O'Brien and Brandon Hennessy with violent disorder, while Juares Kumbu was charged with possession of a submachine gun. In February 2025, the Special Criminal Court found Andrecut, Amah and Musueni guilty of murder and Kabangu, O'Brien and Brandon Hennessy guilty of violent disorder; Andrecut was sentenced to life imprisonment, Amah and Musueni to nine years each, and the violent disorder convicts to shorter terms. In November 2026, the Court of Appeal dismissed appeals by Andrecut and Brandon Hennessy against their convictions.

  Sentenced, 10 Apr 2025Convicted, accused · 13 reports

Each entry shows how that report described them.

1. 17 Feb2025
   Convictedrte.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Six convicted over Blanchardstown steakhouse shooting

   convicted, Diarmuid O'Brien, male, named, irish (judged from name)Diarmuid O'Brien♂IE
2. 17 Feb2025
   Convictedirishmirror.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Three found guilty of murdering gunman Tristan Sherry in restaurant attack

   convicted, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
3. 17 Feb2025
   Convictedrte.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Three men found guilty of murder of Tristan Sherry

   convicted, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
4. 13 Dec2024
   In courtirishmirror.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Court hears murder-accused teen lost control after pal shot in Dublin steakhouse

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
5. 5 Dec2024
   In courtirishmirror.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Tristan Sherry murder accused was 'provoked' by hit on father-figure, court told

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
6. 20 Nov2024
   In courtirishmirror.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Son of shooting victim said gunman who was beaten to death 'deserved it'

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
7. 18 Nov2024
   In courtrte.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Victim was father figure to murder accused, court told

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
8. 15 Nov2024
   In courtthejournal.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Gunman Tristan Sherry was stabbed 16 times in Dublin restaurant on Christmas Eve, court hears

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
9. 12 Nov2024
   In courtirishmirror.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

   Court hears graphic account of how gunman Tristan Sherry was beaten and stamped

   accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE
10. 12 Nov2024
    In courtthejournal.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

    Garda delivers detailed account of Tristan Sherry's death in Dublin restaurant on Christmas Eve

    accused, Diarmuid O'Brien, 18, named, irish (judged from name)Diarmuid O'Brien18IE
11. 7 Nov2024
    In courtirishtimes.com, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

    Murder trial shown CCTV footage of Tristan Sherry being beaten to death in Dublin restaurant

    accused, Diarmuid O'Brien, 18, named, irish (judged from name)Diarmuid O'Brien18IE
12. 6 Nov2024
    In courtirishtimes.com, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

    Gunman Tristan Sherry was kicked and stamped in ‘savage’ Christmas Eve steakhouse assault, court hears

    accused, Diarmuid O'Brien, named, irish (judged from name)Diarmuid O'BrienIE
13. 6 Nov2024
    In courtrte.ie, in Appeals dismissed in murder of gunman at Blanchardstown restaurant

    Six deny charges in case connected to Dublin murder

    accused, Diarmuid O'Brien, 18, male, named, irish (judged from name)Diarmuid O'Brien♂18IE

Matched on the name as printed, ignoring quoted nicknames, and split by the ages reported. Two people who share a name and age would appear together here.