Golka

Golka was the mate of Grommash Hellscream. When ogres raided the Warsong clan, she fought fiercely, taking down several ogres personally. She was mortally wounded during the battle and pleaded with Grom to finish her off. Disgusted at her weakness, Grom called her "a wolf with no teeth" and walked away, leaving her to suffer. Her death brought about the rebirth of the Warsong clan and the beginning of Grom's legend.

At an unknown date before she died, Golka became pregnant by Grom and gave birth to a son, Garrosh.

Alternate timeline
In alternate Draenor, Grom was haunted by and regretful over his weakness that led to her death. He vowed to have Golka's strength in averting the fate Garrosh revealed to him. This version of Golka was stated not to have had a son. While this does mean that Garrosh Hellscream would have no counterpart in this timeline, Grom did end up having a son, albeit with a different woman. This son would later betray his father by joining with the Lightbound, becoming Exarch Hellscream.