Which of these French Impressionist painters held British nationality due to his parents being English?

Alfred Sisley (30 October 1839 – 29 January 1899) was an Impressionist landscape painter who was born and spent most of his life in France, but retained British citizenship. Sisley was born in Paris to affluent British parents. His father, William Sisley, was in the silk business, and his mother Felicia Sell was a cultivated music connoisseur. He was the most consistent of the Impressionists in his dedication to painting landscape en plein air (i.e., outdoors).

Impressionism is a 19th-century art movement characterized by relatively small, thin, yet visible brush strokes, open composition, emphasis on accurate depiction of light in its changing qualities, ordinary subject matter, inclusion of movement as a crucial element of human perception and experience, and unusual visual angles.

The Impressionists faced harsh opposition from the conventional art community in France. The name of the style derives from the title of a Claude Monet work, Impression, soleil levant (Impression, Sunrise), which provoked the critic Louis Leroy to coin the term in a satirical review published in the Parisian newspaper Le Charivari.