Boudin painted independently, having been a major influence on Monet and Impressionism.
Jongkind
Looser and more painterly styles from Guardi around 1775 to Delacroix in 1862: paving the way for the Impressionists.
We should refer to European and not French Impressionism, although prior to about 1880 the hub of the movement was certainly Paris.
An illustrated index of the 61 artists covered in this series, with links to detailed coverage.
If anyone led Impressionism during the 1860s and early 1870s, it was surely Jongkind.
The Eclectic Light Company 