- Grandfather of Claude Renoir.
- Great grandfather of Sophie Renoir.
- He created a series of sculptures with the help of his assistant, Richard Guino (from 1913 to 1918). For more than 90 years after Renoir's death, his and Guino's descendants have been involved in a number of lengthy lawsuit battles in France and America over copyright infringement frauds and royalties over the creation and ownership of Renoir-Guino sculptures.
- His great-grandson Alexandre Renoir is his first (and so far his only) direct descendant to take up painting as a profession. Pierre-Auguste's children (and their descendants) all went into the newest form of art in their time which was filmmaking.
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