White Matlack (October 7, 1745; Haddonfield, New Jersey – January 7, 1824) was a New York Quaker and abolitionist.
He was born to Elizabeth Martha Burr Haines and Timothy Matlack: a couple that had both lost their first spouses.
His grandparents were William Matlack and Mary Hancock; and Henry Burr and Elizabeth Hudson.
His siblings were Sybil, Elizabeth, Titus, Seth, Josiah and Timothy Matlack.
[5] In 1782, he and Isaac Howell signed a document titled The memorial and remonstrance of Isaac Howell and White Matlack, in behalf of themselves, and others, who have been disowned by the people called Quakers, &c.[6] White and his brother Timothy had been disowned by Orthodox Quakers for their support of the American Revolution.