Named after Dorothea Lange - American photographer (1895-1965).
Lange is a crater on Mercury. It appears to have been flooded by lava, with only faint traces remaining of a buried inner ring. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Mercury they are named after deceased artists, musicians, painters, and authors who have made outstanding or fundamental contributions to their field and have been recognized as art historically significant figures for more than 50 years.
Image Source. Marker locations are approximate and may not always appear to align with image on map.