Named after Maria Agnesi - Italian mathematician (1718-1799).
Agnesi is a crater on the planet Venus. The crater is 42.4 kilometers in diameter. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Venus they are named after deceased women who have made outstanding or fundamental contributions to their field (if over 20 km). If smaller common female first names are used.
Image Source. Marker locations are approximate and may not always appear to align with image on map.