Interestingly, I do not find record of the burial of Abraham Pennington and wife in the McBrides' book of Cemetery Inscriptions. I guess the stones didn't survive. In deed records, Abraham's wife is given as Mary. Perhaps she was named Mary Elizabeth? At any rate, Mary didn't die as early as you suggest. Deed Bk 15 page 289: 21 Aug. 1848. Isaac Pennington and Narcissa hw, Jacob Pennington and Mary Jane hw, Daniel Easter and Martha hw, Arthur Black and Syrena hw, Nathan H. and Deborah Pennington, and Mary Pennington, widow and heirs of Abraham Pennington, dec'd, conveyed land in Boston to the following grantees: Thomas S totler, Edmond Keeler, Daniel F. Maddox, Nathan H. Pennington, Robert Moor, Noah H. Hixson, Daniel F. Maddox, James Mendenhall, Howell Keeler, William Stotler. These transactions were on different dates. Hope this helps a little. Cathy Gowdy Marin Co. Gen. Soc.