Im Looking for Andrew Campbell Who was Married to a Long

iknow my gresat grandfathers name is andrew campbell. he married a lady with the last name of long. my grandmothers mane is ada campbell. she also had three sisters and one brother. they all became ophans at a young age. my grandmother took care of her sisters and brother. my grandmother was indian. i believe she was chocotaw. im looking for information on her mother which would be my great-grandmother. could somebody please help me?