“The daughter of a diplomat, born in Copenhagen in 1949 and raised in Buenos Aires, de Guébriant was introduced in 1975 to the artist’s daughter and archivist, Marguerite Duthuit, and became her assistant, working closely with her on Matisse catalogues and exhibitions. When Duthuit died in 1982, De Guebriant succeeded her as the only official specialist for Matisse’s work.” – The Art Newspaper