John Constable

Self Portrait (1799/1804) of John Constable, at the National Portrait Gallery, London
Master of the 19C British landscape
John Constable (1776-1837) was a great Romantic British landscapist whose scenes (especially the "happy agricultural peasant" ones) got ever more idealized—but his compositions and brushwork freer—with each passing year.
You'll find his best stuff in:
- National Gallery, London
- V&A, London
- Walker Art Gallery, Liverpool
Selected works by John Constable in England

Branch Hill Pond, Hampstead Heath, with a Cart and Carters (c.1825) by John Constable in the Tate Britain, London