I came from a southern slaveholding family but became an important abolitionist. i moved to the north in support of abolitionist efforts and became a quaker. who am i?

The correct answer should be Angelina Grimke.

She was born into a slaver family, however, she disagreed with them over whether slaves should be free or not. She later on joined the abolitionist cause because she wanted all people to be equal, regardless of the color of their skin.