Male first name (English, Irish): Rowan, the little red, Celtic (Word format); Ruadh = red, red-haired; anglizierte form of an Irish nickname of 'Ruadhan' Female first name (English, Scottish): Rowan and the little red, Celtic (word composition ); Ruadh = red, red-haired; anglizierte form of an Irish nickname of 'Ruadhan'