Samuel Jackson's 1843 Will recorded in Allegany Co., Maryland Will book Liber A Folio 239 & 240 mentions Wife Margaret and six children: Martha, Joseph Jackson, Samuel Jackson, Jacob Jackson, Mary Monroe, Margaret Jacobs. Gabriel Jacobs of the State & County before mentioned, to be sole executor.
Margaret Jackson and Martha Jackson, the wife and daughter of Samuel Jackson must have died before April 13, 1836, because on this date the estate of Samuel Jackson is being divided as per terms of Samuel's Will. Estate was not to be divided until after death of Wife Margaret and daughter, Martha. http://www.reocities.com/Heartland/Prairie/6173/myjackson.html