In 1876.
This question can be answered only by Renoir himself
Yes, he did.
In 1883.
yes
In 1881.
From the 1850s until his death in 1919.
It is a commissioned portrait.
He bought more.
It was started in 1881. Renoir made some changes and finished it in 1886.
Renoir used oil paint and usually painted on big canvases, however at one point in his life he ran out of paint, and unfortunatly he ran out of money too, so he had to stop using oil paint for a while.
Renoir's inspiration: How to paint: Claude Monet What to paint: Beautiful women.
The whole group if impressionists, especially Renoir.