Allied to the Arnolfini Portrait's technical power was also the suggestiveness of its famous mirror, imitated in works ranging from a William Holman Hunt drawing of 1850, illustrating Tennyson's 'The Lady of Shalott', to The Mirror by William Orpen
This exercise was carried out in 2016 and resulted in increased valuations of several paintings as well as reflecting the acquisition of a William Orpen
painting which was bequeathed to the Kirklees Art Collection last year.
Born in Limerick in 1889, Keating won a three-year scholarship to the then-Dublin Metropolitan School of Art (DMSA) where he was part of an outstanding group of students including Harry Clarke, Margaret Crilly and Beatrice Elvery, taught by William Orpen
The exhibition also includes a series of lithographs by Paul Nash, prints by CRW Nevinson, paintings by George Grosz and William Orpen
and two prints from the Otto Dix series Der Krieg.
For example, William Orpen
and Pablo Picasso are just two of the artists who have had a big impact on my work and I've painted originals in honour of them.
Ronnie has said he has been inspired by artists such as Schiele, Henri Matisse, Vincent Van Gogh, William Orpen
and Pablo Picasso in creating the paintings, saying: "When I get inspired I get almost possessed and I just have to paint.
The picture of a young girl, Yvonne Aubicque, was painted by First World War official artist Sir William Orpen
, who was her lover.
The man, a retired writer who has not been named, believed the painting of a beautiful young girl was a copy of a work by official WWI artist Sir William Orpen
Artistic expressions include works representing the art movement Neue Sachlichkeit (New Objectivity), such as those by Germany's Max Beckmann and Otto Dix, as well as social realist Irishman William Orpen
From the First World War itself there is a slightly disconcerting painting by William Orpen
of the room in which he stayed while serving as an official war artist, a steel helmet slung over the bedpost near the artist's portfolio.
Like Synge, whom he admired, the painter William Orpen
was Anglo-Irish and was born in the 1870s.
Sotheby's have an unrivalled reputation for selling established Irish artists such as Sir John La very, Sir William Orpen
, Jack Butler Yeats and indeed, the greatest living Irish Artist, Louis le Brocquy," Ms Bishop said.