David Barclay of Youngsbury ( 1729 - 1809 ) , on the other hand , was a noted abolitionist .
Verene Shepherd , the Jamaican historian of diaspora studies , singles out the case of how he chose to free his slaves in that colony .
David Barclay of Youngsbury ( 1729 - 1809 ) , on the other hand , was a noted abolitionist , and Verene Shepherd , the Jamaican historian of diaspora studies , singles out the case of how he chose to free his slaves in that colony .