M, b. 4 March 1805
| Birth* | 4 March 1805 | Thomas B Harlow was born on 4 March 1805 at Virginia . |
| Marriage* | 1830 | He married Jane (?) in 1830 at Virginia .1 |
| Census1850* | 25 September 1850 | Thomas B Harlow appeared on the 1850 Census of Washington County, Virginia, enumerated 25 September 1850. His children Jane and James were listed as living with him.2 |
| Marriage* | 30 January 1853 | Thomas B Harlow married Margaret M Spurgeon on 30 January 1853 at Washington County, Virginia .3 |
| Census1860* | 15 September 1860 | Thomas B Harlow and Margaret M Spurgeon appeared on the 1860 Census of Raven's Nest, Washington County, Virginia, enumerated 15 September 1860. Their children William, Charles B, Sarah C, Elizabeth and Nancy A were listed as living with them. |
| Occupation* | | Thomas B Harlow was a chairmaker.4,5 |
| Census1870* | 13 July 1870 | He and Margaret M Spurgeon appeared on the 1870 Census of Moccasin Twp, Russell County, Virginia, enumerated 13 July 1870. Their children Charles B, Sarah C, Elizabeth, Nancy A, Benjamin H, George Marion, Thomas and Eliza Elaine were listed as living with them.4 |
| Census1880* | 22 June 1880 | Thomas B Harlow and Margaret M Spurgeon appeared on the 1800 Census of Kinderhook, Washington County, Virginia, enumerated 22 June 1880. Their children Charles B, Elizabeth, Benjamin H, Nancy A, George Marion, Eliza Elaine and Henry K were listed as living with them.5 |
| Burial* | | Thomas B Harlow was buried at Fleenor Cemetery #8, Mendota, Washington County, Virginia .   |