Michael O'Brien was an Irish

Republic of Ireland

Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

 sportsman who played in the League of Ireland

League of Ireland

The League of Ireland is the national association football league of the Republic of Ireland. Founded in 1921, as a league of eight clubs, it has expanded over time into a two-tiered league of 22 clubs. It is currently split into the League of Ireland Premier Division and the League of Ireland...

 during the 1920s and also played Gaelic football

Gaelic football

Gaelic football , commonly referred to as "football" or "Gaelic", or "Gah" is a form of football played mainly in Ireland...

 and cricket

Cricket

Cricket is a bat-and-ball game played between two teams of 11 players on an oval-shaped field, at the centre of which is a rectangular 22-yard long pitch. One team bats, trying to score as many runs as possible while the other team bowls and fields, trying to dismiss the batsmen and thus limit the...

. He was known by the nickname Ginger.

O'Brien had a short spell at centre forward for Bohemians

Bohemian F.C.

Bohemian F.C. , more commonly referred to as Bohemians, is a professional football club from Dublin, Ireland. Bohemians compete in the Premier Division of the League of Ireland and are the third most successful club in League of Ireland football history, having won the League of Ireland title 11...

, making his debut for the club on December 26 1925 against Shamrock Rovers F.C.

Shamrock Rovers F.C.

Shamrock Rovers Football Club are a professional football club from Dublin, Ireland. They compete in the Premier Division of the League of Ireland and are the most successful club in Irish football history. The club have won the League of Ireland title a record 17 times and the FAI Cup a record 24...

 at Dalymount Park

Dalymount Park

Dalymount Park is an Irish football stadium situated on Dublin's Northside. It is the home of Bohemian F.C., who have played there since the early 20th century. Affectionately known as 'Dalyer' by fans, it was also historically the "home of Irish football" holding Irish internationals and FAI Cup...

. Bohs won 2-0, a result which denied Rovers the league title. He also represented Shelbourne amongst others.

He played Gaelic football for O'Tooles GAA and played for Dublin

Dublin GAA

Dublin County Board of the Gaelic Athletic Association , or Dublin GAA, is one of the 32 county boards of the GAA in Ireland, and is responsible for Gaelic games in County Dublin. The county board is also responsible for the Dublin inter-county teams...

at right-half-forward.