I think John & Margaret are probably Margaret Maker's parents.
John W. Card's gravestone says d. Dec. 24,1866 aged 78y-9m; Margaret Card's says d. May 1, 1878 aged 74y-9m.
The 1850 Cutler census has John W. Card, aged 59 born in Nova Scotia;Margret aged 50born in Ireland;daughter Isabellaaged 18 born in Nova Scotia;Moses Bagley aged 24 born Maine;Mary Bagley aged 25 born Nova Scotia; and Isibel Bagley aged 10/12 born Maine.
So the census records don't agree with the gravestones. That's about all the info I have on these families. If I could just get to Washington County again...