Martha (née Kane) Wayne was a fictional Batman character who was the mother of Bruce Wayne. She was the wife of Thomas Wayne. After her and her husband were killed, her only son, Bruce becomes Batman because of their killing. She was created by Bill Finger.
Lauren Cohan plays Martha in the DC Extended Universe first appearing in Batman v Superman: Dawn of Justice (2016).
Images for kids
The Wayne family encounters Joe Chill, in Detective Comics #33 (November 1939)
Thomas and Martha Wayne in Batman: Dark Knight Dynasty (November 1997); art by Scott Hampton
Martha Wayne as the Joker (right) and Thomas Wayne as Batman (left) of the Flashpoint universe; art by Dave Johnson