We are familiar with the names of Harriet Tubman, Sojourner

We are familiar with the names of Harriet Tubman, Sojourner Truth and Frederick Douglass as being supporters and activists in the Abolitionist movement.  This week the forum will focus on non-African Americans who risked their lives, reputations and wealth to help free thousands of slaves.Name some of the non-African American Abolitionist that supported and helped African Americans before the Civil War fight slavery?this is a discussion forum. . . Must be at least 300 words at least 2 references. NO PLAGIARISM!!!!