This is so often true. I find it in my Entsminger line. The surname came from the fact the family pre 1600 came from Insming in the border area between now Germany and France-after immigration it became Ensminger and then Insminger, Entsminger. In the case of the last spelling it happened in VA in the 1700s to get the neigbors to pronounce the name to the satisfaction of old Henreick. The only thing I am sure of is that after 1800 my line spelled it Entsminger and before that anything close is no doubt kin. This family came into Chester Co and then moved on to Lancaster! Ginny