23/3/2017. Martin McGuinness Funeral. Leader of the Democratic Unionist Party and former First Minister of Northern Ireland, Arlene Foster,leaving the church after the funeral mass of former Sinn Fein and Provisional IRA leader and Deputy First Minister of Northern Ireland, Martin McGuinness, in St Columba's Church in Derry Photo: Eamonn Farrell/RollingNews.ie