Named after William H. Wright - American astronomer (1871-1959).
The naming was approved by the IAU in 1973. The first image below shows the relationship among three craters that are near each other. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Mars large craters are named after deceased scientists, writers and others who have contributed to the lore of Mars. Small creaters (less than 60km) are named after small towns and villages.