I am Marie Ellen Dawson's son. According to family lore, her mom (Margaret Jane Swartz) married Talmage Edward Dawson twice and divorced him twice, so one of those marriages was probably 1952, and perhaps one before (unknown date). She may have been named Margaret Dawson in the 1952 marriage record because she may have kept her married name Dawson after her 1st divorce.
If you found the 1950 census with Mary, is there any way you can provide a link? the same for Talmage?