All the FINGER families I have seen migrated from Germany. There was a mass migration of German families to America between 1730-1755 and another startig around 1840-1860.
My branch of the FINGER family always maintained its original spelling and in fact our Peter Finger was one of the few passengers who could sign his own name. Peter Finger the Pioneer came to Philadelphia,PA in 1749 and eventually moved to Lincoln,NC in 1775 where died in 1792. Most of the FINGER families in the southeastern United States are related to this Peter Finger. Relatives are primarily in NC & TN with some in SC,GA,FL,MS,MO,AR & CA. Some of these branches )a very few) even use the Surname FANGER or FINGERS now.
The earliest branch of the FINGER family in America is recorded in New York State in the mid 1600's. I believe the spelling may have originally been VINGER or FENGER for a short period there. These descendants are also of German Ancestry.
If related to this Peter Finger line I would love to hear from you.