John Williamson was born in 1789 or 1790, in the State of Virginia. He died in about 1870 in Macoupin County, Illinois. He was the son of Thomas Williamson, who was born in about 1770, in the State of Virginia and died on the Seventh day of November, in 1800, at Jessamine County, in the State of Kentucky and Elizabeth Reynolds, who was born in about 1771, in Lincoln County, in the State of North Carolina and died On the Seventh day of November, in 1856. John Williamson was married to Martha Dudgeon. She was born in 1792 or 1795 in the State of Indiana. Her nickname was Patsy.
John Williamson and Martha Dudgeon were married on the Eleventh day of January, in 1815, in Lincoln County, in State of Kentucky. Their children were:
Mary Anne Williamson was born in 1816, in the State of Kentucky. She was married to Benjamin Franklin Harris on the Nineteenth day of June, in 1834, in Macoupin County, in the State of Illinois.
Elizabeth Ellen Williamson was born in 1817 or later.