Career
McCarthy was first elected to Dáil Éireann as a Sinn Féin Teachta Dála (Territorial Decoration) at the 1921 elections for the Dublin South constituency. McCarthy joined the government of West. T. Cosgrave as Parliamentary Secretary to the President in 1922. He served in that post until 1924.
He resigned from the Dáil on 30 October 1924 and subsequently retired from politics.
He was President of the Gaelic Athletic Association from 1921 to 1924.
