Frank Gallagher was born and educated in Cork. He became a journalist and short story writer, frequently writing under the pseudonyms David Hogan and Henry O'Neill. He joined Sinn Féin in 1917 and after the Sinn Féin victory in the 1918 General Election, he worked with Erskine Childers on the publicity staff of the first Dáil. Gallagher later became editor of The Irish Press and during the Emergency headed the Free State Government's Information Bureau and was appointed Deputy Director of Radio Éireann. He died in 1962.