One of the great tastemakers of the late 19th and early 20th centuries, Eugenia Huici Arguedas de Errázuriz (1860–1951) was born into a wealthy Chilean mining family in Bolivia. She married amateur painter José Tomás Errázuriz, and while honeymooning in Europe the couple quickly became favorites in a group of artists that included John Singer Sargent and Auguste Rodin. After Cocteau introduced Errázuriz to Pablo Picasso in 1916, she would become Picasso’s most devoted patron. This publication, the first to focus on this remarkable figure, traces Errázuriz’s life and the broader subject of South Americans in turn-of-the-century Europe through the many portraits of Errázuriz and a selection of artworks from her extraordinary personal collection.