For the rest of her life, that list of people to love never stopped growing. She always gave so much more than she ever asked for,” Bezos wrote.

Jackie Bezos, a fierce protector of her son Jeff before he founded Amazon.com Inc. and a deep-pocketed advocate for early childhood education, has died. She was 78.

No cause of death was listed, but Jackie Bezos had been fighting Lewy body dementia, a brain disorder, for five years before her death. Jeffrey Bezos was Jacklyn's first child, whom she raised as a single mother after giving birth in high school.