The original Cathal Brugha Street was the section west of Marlborough Street, which was created as part of the reconstruction of Dublin after the damage of the Irish revolutionary period of 1916–23, which destroyed much of the vicinity.
The pre-existing Findlater Place (originally Gregg's Lane) ran at an angle between O'Connell Street and Marlborough Street, to the north of St. Thomas's Church of Ireland church, which fronted on Marlborough Street and was destroyed in the revolution.
The new street was at right angles to O'Connell Street and Marlborough Street, intersecting the north-east stub of Findlater Place, and running south of the rebuilt St. Thomas Church to align with Gloucester Street (renamed Seán Macdermott Street in 1932 after Seán MacDermott).

Originally the street had no official name, because Dublin Corporation was dissolved in 1924 and replaced by unelected commissioners.
During the Civil War, anti-Treaty leader Cathal Brugha had been shot dead near by on O'Connell Street, and the unofficial name "Cathal Brugha Street" gained currency with locals.
It was officially adopted by the revived Corporation in 1932.

In 1992, the next block east of Marlborough Street was redesignated from Seán Macdermott Street to Cathal Brugha Street by the Corporation, after a plebiscite of local ratepayers.
The abutting plots were derelict and Seán Macdermott Street was a byword for urban deprivation and crime; it was hoped the rename would aid urban renewal investment, and a private apartment block was built on the renamed section, named "Gresham House" after the Gresham Hotel on O'Connell Street.
The original Cathal Brugha Street was the section west of Marlborough Street, which was created as part of the reconstruction of Dublin after the damage of the Irish revolutionary period of 1916–23, which destroyed much of the vicinity. The pre-existing Findlater Place (originally Gregg's Lane) ran at an angle between O'Connell Street and Marlborough Street, to the north of St. Thomas's Church of Ireland church, which fronted on Marlborough Street and was destroyed in the revolution. The new street was at right angles to O'Connell Street and Marlborough Street, intersecting the north-east stub of Findlater Place, and running south of the rebuilt St. Thomas Church to align with Gloucester Street (renamed Seán Macdermott Street in 1932 after Seán MacDermott).
Originally the street had no official name, because Dublin Corporation was dissolved in 1924 and replaced by unelected commissioners. During the Civil War, anti-Treaty leader Cathal Brugha had been shot dead near by on O'Connell Street, and the unofficial name "Cathal Brugha Street" gained currency with locals. It was officially adopted by the revived Corporation in 1932.
In 1992, the next block east of Marlborough Street was redesignated from Seán Macdermott Street to Cathal Brugha Street by the Corporation, after a plebiscite of local ratepayers. The abutting plots were derelict and Seán Macdermott Street was a byword for urban deprivation and crime; it was hoped the rename would aid urban renewal investment, and a private apartment block was built on the renamed section, named "Gresham House" after the Gresham Hotel on O'Connell Street.
Cathal Brugha Street