A direct descendant of landscape painter John Constable is selling three of the artist's earliest watercolours.
The paintings date from a time when John Constable was still developing his technique but under pressure to take over the family corn milling business.
Constable completed the paintings, now up for sale, in his early twenties at the turn of the 19th Century.
The auction house handling the sale would not reveal the owner but said he was a direct descendent of the painter.
The paintings were inherited by the Rev Daniel Constable Whalley from his aunt Mary Constable, the artist's younger sister, and have been passed down the family line.
The artist lived most of his life in the countryside on the Suffolk-Essex border now often referred to as Constable Country.
Although his work was to become very valuable he sold only 20 paintings in Britain during his lifetime.
He had more success in France but refused to leave England to promote his work internationally.
He is reported as saying: "I would rather be a poor man (in England) than a rich man abroad".