Akumu is one of Onyango’s wives and the biological mother of the Old Man. From the very beginning, she resented her marriage to Onyango—she’d been promised to another man whom she would have preferred to marry. After having Sarah and the Old Man, Akumu ran away. Though this wasn’t the first time she ran away, her parents and Onyango let her go this time. However, her choice to abandon her children affected the Old Man deeply. He adopted Granny (the third wife who was younger than even Akumu) as his mother and only vaguely reconnected with Akumu. Aunt Sarah, meanwhile, remained loyal to her biological mother, which forms the basis for some of the animosity between Aunt Sarah and the rest of the Old Man’s family in the years after his death.