great plains
Leonardo da Vinci once said "Art is never finished, only abandoned." That is among the more famous quotes of the Italian artist.
John Constable was a pretty famous English artist who painted many rural landscapes, but I'm not so sure about the horses... Gainsborough was also a well known English artist who painted some landscapes, but most of his paintings are portraits... Stubbs was good at painting horses, but that's all he was really good at... really, there were not many English artists who stood out among the other European artists when it comes to both horses and landscapes.
There is not just one. Some among the most famous artists from different periods - Peter Paul Rubens (1577-1640) - Rembrandt van Rijn (1606-1669) - Vincent van Gogh (1853-1890) - Johannes Vermeer (1632-1675) - Jan van Eyck (1390-1441) - Karel Appel (1921-2006)
Fernand Léger was a French painter, draughtsman, illustrator, printmaker, stage designer, film maker and ceramicist. Among the most prominent artists in Paris in the first half of the 20th century, he was prolific in many media and articulated a consistent position on the role of art in society in his many lectures and writings. For more info, please visit the related link below.