Named after Ema (pseudonym of Emilia Kittlova) Patera - Bohemian/Czech singer, also known as Emmy Destinn (1878-1930).
A patera is an irregular crater, or a complex one with scalloped edges. Usually the dish-shaped depression atop a volcano. On Venus they are named after famous women.
Image Source. Marker locations are approximate and may not always appear to align with image on map.