The surname Davison can be traced back to the British Isles to the time where families began to adopt surnames to reduce confusion between similarly named individuals. It is a contraction of the given name Davi, a familiar form of David, with the descendant suffix of "son"--Davi's son--Davison. The language roots of the name, therefore, are Hebrew and English.
The Davison surname cannot be traced back to a single individual or family as there were several Davi's in regionally isolated areas, so not all Davisons are directly blood-related. The Davison name can be traced to Fourteenth and Fifteenth Century families in England, Ireland, Scotland and Wales.
Less common surname spelling variants are Daveson and Davisen. Davisson, though pronounced the same, is generally considered to be distinct from Davison as it is derived from "Davis' son"--the son of Davis.
Those of the Davison surname often times find their names confused and entangled with the predominant Davidson surname. When researching Davison ancestors, genealogists would be well advised to look under both surnames, as people more familiar with Davidson surname would hear the Davison name and write it as Davidson. The confusion is such that some Davison descendants gave up the battle and adopted the name of Davidson instead. Even today, spelling checkers with Auto-correction features have been known to "correct" the Davison surname.
There are several Davison family crests, as well as a Scottish tartan pattern associated with the surname, so those who wish to display or hand down the family identity need not be empty-handed.
My Great Grandmother's Madian name was Sarah Jane Davison from Sullivan County, Tennessee