His master and most of the neighbors belonged to the Society of Friends commonly called Quakers - The Freedmen's Book by Lydia Maria Child

But at the time William Boen was born some of the Quakers did hold slaves though many of their members were preaching against it - The Freedmen's Book by Lydia Maria Child

I saw the tears gush into the eyes of the old grave Quakers of Philadelphia - The Old Bell Of Independence; Or, Philadelphia In 1776 by Henry C. Watson