Swift the poet and satirist. The background contains a reproduction of the coat of arms of Dublin from a city council resolution against a letter by Swift from April 1735. The reverse has a portion of a map of Dublin which was published by John Rocque in 1756. Great Abbey Street and Astons Quay - now known as Middle Abbey Street and Aston Quay respectively are shown as well as the River Liffey. Twenty Pounds The twenty pound note has a portrait of William Butler Yeats, the poet, dramatist, and mystic together with a representation of the mythological hero Cú Chulainn, based on the motif used by the Abbey Theatre. The background is of a Deirdre, a Yeats manuscript. The reverse is an image of the Blasket Islands, off County Kerry with the background of An tOileánach by Tomás Ó Criomhthain. Fifty Pounds The fifty pound note has a portrait of Turlough O'Carolan, the blind Irish harper and composer, with the background from Timbrell. The reverse has a design based on the wood carvings on the organ loft of St. Michan's Church, Dublin. One Hundred Pounds A Series B hundred pound note was never issued, the Series A £100 note remained in circulation. A design mock up was submitted for the £100 denomination in August 1979. After some years of development, a decision was made to not proceed with production of the note, primarily because it was decided that the denomination was not required. The development of the note proceeded through several proof stages before being cancelled in early 1987. During the late 1970s some newspapers reported that a planned £100 note would be mauve and would have Grace O'Malley on the front, and the Galtee Mountains, or a map of Ireland on the reverse, and the dimensions of the notes in size would be 188 x 98 mm. Detailed information about the design of the note became available with the opening of Central Bank of Ireland Archives to the public in 2017. The face of the banknote design features a portrait of Grace O'Malley, the Pirate Queen, with one of her ships looming large in the centre and a second ship in the distance. The predominant colours are red for the portrait and mauve for the ship and background elements. The reverse of the banknote design is predominantly beige. It features a genealogical map of Ireland, based on the