Named after Antonio Luigi Gaudenzio Guiseppe Cremona - Italian mathematician (1830-1903).
Cremona is a lunar crater that is located long the north-northwestern limb. From the Earth this crater is viewed from the side, and the visibility is affected by libration effects. To be viewed in any detail, this crater must be seen or photographed from orbit. It is located midway between the crater Boole to the south-southeast and, on the far side , the crater Lindblad. (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.