(David) Gwyther (Broome) Irwin (7 May 1931 – 18 October 2008) was a British abstract artist born in Basingstoke, Hampshire, who had lived much of his life in north Cornwall.
In 1964, he represented Britain at the Venice Biennale, along with Joe Tilson, Bernard Meadows and Roger Hilton.
His most famous artworks consisted of pictures assembled from newsprint and fragments of advertisements on paper, which he collected from the streets with his wife, and which were then worked up into collages often of fine delicacy and quite subtle shades.
"Gwyther Irwin's latest collages...are evidently miracles of patient assembly...they set out to achieve the subtlest and slowest possible shifts in tonality from umber darkness to creamy light and back again.
The patience, the subtlety, the muted gradations of every effect combine to produce an atmosphere of studied beauty."