Complex sentence: François Robert Velter (February 9,1909--April 27,1991), known by his pen-name Rob-Vel, was a French cartoonist, noted for creating the character "Spirou" in 1938.
Split into simpler sentences: François Robert Velter (February 9,1909--April 27,1991), known by his pen-name Rob-Vel, was a French cartoonist. He is best known for creating the character "Spirou" in 1938.