I’m quite fond of the play “The Old Lady Says No!”  by Denis Johnston, in which the main character, Robert Emmet, gets into an argument with the statue of Henry Grattan on College Green (amongst other odd things).  This is not that statue; the statue in the play can be seen at this excellent post.

Anyway, this is the image of Grattan I have in my mind when reading the play.   Located in Merrion Square, Dublin.