When Colonel Thomas Bouldin Sr was born on 15 January 1706, in Cecil, Maryland, British Colonial America, his father, William Bouldin II, was 41 and his mother, Thomisin Nash, was 35. He married Nancy Ann Clark on 29 January 1733, in Cecil, Maryland, British Colonial America. They were the parents of at least 8 sons and 4 daughters. He lived in Lunenburg, Virginia, United States in 1744. He registered for military service in 1750. His occupation is listed as farmer in Lunenburg, Lunenburg, Virginia, British Colonial America. He died on 2 June 1782, in Charlotte, Virginia, British Colonial America, at the age of 76, and was buried in Golden Hills Estate Cemetery, Drakes Branch, Charlotte, Virginia, United States.