Where is the painting "Arrangement in Grey and Black No. 1" (1871), known as "Whistler's Mother"?

Question

Who, after making a living painting porcelain and sun blinds, became well known due to such paintings as "Portrait of Alfred Sisley", "William Sisley (Father of Alfred Sisley)" and "Skaters in the Bois de Boulogne"?

Answer 1

The Musée d'Orsay in Paris, France
The American-born Whistler was based in the UK and was painting in London at the time. However, the British art establishment and Whistler were increasingly at odds. He eventually pawned the painting and the French government acquired it in 1891. It is one of the most famous works by an American artist held in a gallery outside the US.