Named after Rudolf König - Austrian mathematician, astronomer (1865-1927).
König is a lunar crater on the southwest Mare Nubium. It lies to the southwest of the prominent crater Bullialdus, and northwest of the flooded Kies. The rim is somewhat polygonal in outline, with a small outward bulge to the south and only a slight outer rampart. The crater interior is rough and irregular, with a negligible central peak. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.