René de Boisdeffre (1838-1906) was a French musician and composer of chamber music. Born in Vesoul, Boisdeffre studied with Auguste Barbereau and Charles Wagner, developing an elegant compositional style that won him the Prix Chartier in 1883. Focusing primarily on chamber music for strings, he also composed piano pieces, songs, a mass, and a symphony. Though his works quickly fell out of favor (from what the Macmillan Encyclopedia cites as a lack of inventiveness), Boisdeffre is another composer whose works are enjoying a digital resurgence thanks to the NEH project at Sibley Library. So far, 17 of his compositions have been scanned and posted online, including his sonata for cello and piano.