Dear Darlene, I can help with Mary London. She was Ephraim Wheaton's second wife. They married August 20, 1812, in Greenwich, Kings County. Seth was not the son of Mary London. Four of the children of Ephraim and Mary (London) were baptised at Kingston on August 10, 1819. They were Hannah, Elizabeth, David and Mary Jane. A son James was born about 1825. Of these children, I have only found the track on Hannah, who married Andrew Shampier (Shampers, Shamper) in Belleisle Bay, Kings County, on Feb 19, 1835. Mary London was born about 1784, the daughter of John London and Hannah Ketchum (Ketcham). Hannah Ketchum was born Oct 31, 1756 - somewhere in the US. John London was born about 1755 in Little Egg Harbor, Burlington (now Ocean) County, New Jersey. John and his younger brother, Ralph came to New Brunswick as Loyalists. I descend from Ralph, born about 1760. Their father was also John London, and his wife's name was Elizabeth, but I don't know any more than that. Unlike his sons, John London the elder fought on the side of the Colonies during the Revolutionary War, and died in Little Egg Harbor between August and October of 1778. Best of Luck, Lisa Z