In 1891 a Spanish artist, Miquel Utrillo, signed a legal document acknowledging paternity, although the question remains as to whether he was in fact the child's father.

[3] Valadon, who became a model after a fall from a trapeze ended her chosen career as a circus acrobat,[4] found that posing for Berthe Morisot, Renoir, Henri de Toulouse-Lautrec, and others provided her with an opportunity to study their techniques.

Maurice Utrillo died on 5 November 1955 in Hotel Splendid in Dax, at age 72,[7] of a lung disease, and was buried in the Cimetière Saint-Vincent in Montmartre.

An apocryphal anecdote told by Diego Rivera concerning Utrillo's paternity is related in the unpublished memoirs of one of his American collectors, Ruth Bakwin: "After Maurice was born to Suzanne Valadon, she went to Renoir, for whom she had modeled nine months previously.

'"[8]In 2010, several retrospective exhibitions were staged, at Oglethorpe University Museum of Art[9] and in Montmartre (Paris) that culminated in an auction of 30 of Utrillo's works on 30 November 2010[10] from the collection of Paul Pétridès [fr], Utrillo's art dealer, whose Galerie Pétridès [fr] also dealt with the likes of Jacques Thévenet.

[10] In 2022, Utrillo's Carrefour à Sannois which the Nazis had looted from the French Jewish art collector and dealer Georges Bernheim in 1940, was restituted to the heirs after a long legal battle.

[11][12][13] Utrillo is played by Bruno Gouery in the 2024 film Modì, Three Days on the Wing of Madness directed and co-produced by Johnny Depp.