Macrobius (Moon)

Named after Ambrosius Aurelius Theodosius Macrobius - Roman writer (unkn-fl. c. 410).

Macrobius is a prominent lunar impact crater located to the northwest of the Mare Crisium. It lies on the southeast edge of the Lacus Bonitatis, a small lunar mare. The somewhat smaller crater Tisserand lies just to the east. The outer wall has a multiply terraced inner surface, with some slumping along the top of the rim. (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.