Rodier was born in 1829 in Malveille, near to Chambon-sur-Dolore, France. Originally a member of the Brothers of the Annunciation at Misserghin in Algeria, he helped to run an orphanage. Brother Marie-Clément worked with the orphanage's citrus trees, and made grafts from an uncultivated tree that had grown among some thorn bushes in the orchard. This graft resulted in the clementine, which was named in honor of its creator.
Brother Marie-Clément's new variety was "a species of mandarin, which won the admiration of connoisseurs and which the orphans baptized the Clementine. It was neither a mandarin tree nor an orange tree. Its fruit was redder than a mandarin and had a delicious taste and, moreover, it had no pith".
Brother Marie-Clément became a brother in the Congregation of the Holy Spirit after the Brothers of the Annunciation were authorized to join that order in 1903. He died in 1904.
- "The Spiritan Connection to the Clementine Fruit". Center for Spiritan Studies. Duquesne University. 2007. Retrieved September 23, 2010.
- Charrier, René. Memoire Spiritaine, Études et Documents, 1.
- "New Campus Buildings Named for Significant DU Figures". Duquesne University Times. Duquesne University. September 22, 2010. Retrieved September 23, 2010.