Status of the Irish language Northern Ireland, including Sinn Féin President Gerry Adams, learned Irish while in prison, a development known as the "Jailtacht". Although the language was taught in Catholic secondary schools (especially by the Christian Brothers), it was not taught at all in the controlled sector, which is mostly attended by Protestant pupils. Irish-medium schools, however, known as "Gaelscoileanna", were founded in Belfast and Derry and the Gaelscoileanna movement has since expanded to across much of Northern Ireland similar to its expansion in the Republic of Ireland. An Irish-language newspaper called "Lá" (later called "Lá Nua") produced by The Andersonstown News Group (later
Seán Mac Stíofáin "Sinn Féin Gardiner St". Those supportive of Mac Stiofáin's "Provisional Army Council" came to be known popularly as the Provisional IRA and Provisional Sinn Féin, or "Sinn Féin Kevin St". That party contested elections as "Sinn Féin". The Official IRA were known informally as the "stickies", given the tradition to affix Easter lilies with sticky gum, rather than pins. According to Ruairí Ó Brádaigh, it was Mac Stíofáin, as chief of staff of the Provisionals, who invented the name "P. Ó Néill". P. O'Neill is the name appended to IRA declarations to show that the statement is genuine. Nicknamed 'Mac