Rebecca Henriette Lejeune Dirichlet
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Rebecca Henriette Lejeune Dirichlet, née Rebecca Henriette Mendelssohn Bartholdy (b. 11 April 1811 in Hamburg, d. 1 December 1858 in Göttingen) was a granddaughter of Moses Mendelssohn and the younger sister of Felix Mendelssohn Bartholdy and Fanny Hensel. She was at the center of a notable salon, having social contacts with the important musicians and scientist in a highly creative period of German intellectual life.
In 1832 she married the mathematician Peter Gustav Lejeune Dirichlet, who was introduced to the Mendelssohn Bartholdy family by Alexander von Humboldt.