Named after Henri Matisse - French painter and sculptor (1869-1954).
Matisse is an impact crater on the Southern hemisphere of Mercury. Matisse takes its name from the French artist Henri Matisse. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Mercury they are named after deceased artists, musicians, painters, and authors who have made outstanding or fundamental contributions to their field and have been recognized as art historically significant figures for more than 50 years.
Image Source. Marker locations are approximate and may not always appear to align with image on map.