King George 3rd is on the thorne.
At this time Mary is on the edge of my research and therefore I haven't found when she was born or who her parents were
Mary married Edward Foulkes on 4th December 1810 in St. Oswald, Chester, Cheshire,
what I can tell you is,
King George 4th takes the thorne on the 29th January 1820 on the death of his father King George 3rd.
they Baptist 5 children on the 2nd July 1820 in Hawarden Flintshire Wales
John is born during 1816
at this time that's all I know