I just recently found out that the original spelling of my last name was Dismuke, then Dismukes (dropped in census) and finally Desmuke.
During my initial genealogical research, I located an uncle, who told me there had been some animosity that developed between his father, William Dismukes and his siblings.William, born in 1876, changed the spelling to Desmuke in the late 1890s.
His father, Andrew Dismuke was from Gonzales, Texas, and in the 1870 census for that area, he was living with his wife, Sealy and baby daughter Myrtle. After he died somewhere between 1879-80, Sealy appears in the 1880 census as Sealy Dismukes (enumerators' ineptness} Gonzales, Texas.
I have since found quite a few relatives that are Dismukes and have able to add them to my family tree.