Donald Earl McKinney Sr (Our Father's Scottish Ancestors):

Eda Faye Thomasson (Our Mother's Scottish Ancestors):

These ancestors from SCOTLAND were descended from several of the various ancient warrior tribes who invaded/settled Scotland during Medievel times.

Many “HIGHLAND SCOTS” were descended from the ancient tribe of Celtic SCOTS (Scoti/Gaels). This tribe was a Gaelic branch of Celtic Irish warriors from the north of IRELAND who began their invasion/settlement of what is now the highlands & isles of western Scotland during the 6th century A.D. The ancient PICTS, aboriginals of unknown origin, had settled the highlands of Scotland centuries before.
The Celtic "Scots" gave Scotland its name, also bringing with them the Gaelic language & Celtic traditions such as bagpipes, kilts as well as the Mac prefix (meaning "son of") used later during the 13th century when the development of surnames & the Clan system began in the Scottish highlands. Evidently, there was still a considerable amount of migration across the Irish Sea between Ireland and the western highlands of Scotland until the end of the Medieval period as clans continued to maintain family ties. During the 9th Century the Norse VIKINGS also invaded/settled in the area of the northeast as well as the western isles.

Many “LOWLAND SCOTS” were also descended from various ancient tribes, the Celtic BRITONS, Teutonic ANGLES & Norse VIKINGS. The BRITONS were another branch of the Celts & had dominated the lowlands of what later became Scotland, England & Wales until the Roman invasions controlled the area from the 1st thru 4th centuries. Soon after the Roman withdrawal, the Teutonic ANGLES began their invasions during the 5th Century. The Norse VIKINGS invaded the lowlands as well as other areas of the British Isles during the 9th century. The NORMANS made an attempt to settle lowland Scotland during the 11th Century, but did not conquer Scotland as they did in England.

Tribal warfare existed for decades among these various tribes but eventually they became somewhat united, inter-married & shared similar Celtic customs.

Constant political/religious strife & civil wars continued throughout the British Isles during the next few centuries. Eventually, the term "Great Britain" was created when England and Scotland became a single kingdom under King James VI of Scotland who also became King James I of England, after the death of Queen Elizabeth I in 1603. However, this was only a union of the crowns of the two countries, each with its own Parliament. Civil wars continued throughout the 1600’s, but political union was established in 1707 during the reign of Queen Anne with the formal union of of the 2 Parliaments.
Wales was previously united with England in 1534.

(These ancient "Irish tribes, the "Scots", are not to be confused with the "Scots-Irish/Ulster-Scots" who settled in Ulster Northern Ireland from Scotland during the 17th Century. However, many of the modern day people of Scotland, Ireland, Ulster & Wales share an ancient Celtic heritage.)