In Mr and Mrs Clark and Percy, how is the Background discussed?
The work is part of a series of double portraits made by Hockney from 1968, often portraying his friends.  Hockney and Clark had been friends since meeting in Manchester in 1961, and Hockney was Clark's best man at his wedding to Birtwell in 1969.  Hockney did preparatory work for the painting from 1969, making drawings and taking photographs.  He worked on the painting from early 1970 to early 1971.
best man