John O'Brien is a

Gaelic football Gaelic football (; short name '')'', commonly known as simply Gaelic, GAA, or football, is an Irish team sport. A form of football, it is played between two teams of 15 players on a rectangular grass pitch. The objective of the sport is to score ...

er who played for the

Round Towers Round or rounds may refer to: Mathematics and science * Having no sharp corners, as an ellipse, circle, or sphere * Rounding, reducing the number of significant figures in a number * Round number, ending with one or more zeroes * Round (crypto ...

club and at senior level for the Dublin county team. He made his debut in the 2008

O'Byrne Cup The O'Byrne Cup is a Gaelic football competition organized by the Leinster GAA and first staged in 1954. History The competition is named in honour of Matt Byrne (b. 14 February 1870), a former Wicklow GAA club and county officer. By virtue of ...

against

Wicklow Wicklow ( ; , meaning 'church of the toothless one'; ) is the county town of County Wicklow in Republic of Ireland, Ireland. It is located on the east of Ireland, south of Dublin. According to the 2022 census of Ireland, 2022 census, it had ...

. O'Brien made his NFL debut for Dublin against

Westmeath County Westmeath (; or simply ) is a Counties of Ireland, county in Republic of Ireland, Ireland. It is in the Provinces of Ireland, province of Leinster and is part of the Eastern and Midland Region. It formed part of the historic Kingdom of ...

in the first round. He was on Dublin's winning team for the 2008 O'Byrne Cup winning team which defeated

Longford Longford () is the county town of County Longford in Ireland. It had a population of 10,952 at the 2022 census. It is the biggest town in the county and about one third of the county's population lives there. Longford lies at the meeting of ...

in the final.HILL 16
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References

Year of birth missing (living people) Living people Alumni of Garda Síochána College Dublin inter-county Gaelic footballers Garda Síochána officers Round Towers Clondalkin Gaelic footballers Police officers from County Dublin {{Dublin-gaelic-football-bio-stub