I am also descended from Sally & Simeon Morton thru their son, Isaac who went to Genesee MI. He md 2) a Mary Phillips.Their daughter Deborah b. 10 May 1850 md a John Monroe Alexander. Another Alexander from Windham Co. VT.
Congratulations on finding Sally's last name. I had even hired a researcher with no result.
Have you any knowledge of Asa Alexander who was declared a "lunatik" and was supported by Isaac Morton Sr, Simeon and Jonathan?