Robert Woodward Barnwell married August 9, 1827 Eliza Barnwell, daughter of his first cousins John Gibbes Barnwell and Sarah Bull. Their nephew, Joseph Barnwell, who said he spent more of his youth with them than with his own family, felt that she was every bit a match for her talented husband:
"She was a great reader and had the very best memory for dates and persons I have ever known. Uncle Robert always appealed to her to give him the names of persons they had met in Washington or elsewhere and dates of every character. I do not ever remember her failing. She was a fine housekeeper, and she had a special carpenter named David to do whatever work she desired done: she was fond of making changes for the convenience of herself and the family in the arrangement of their house. . . My first recollection of her was seeing her sitting at the head of the dinner table in summer in Beaufort, helping an enormous dish of shrimp from a chafing dish . . . Aunt Eliza always kept a bountiful table, as was the custom everywhere in her day." After the war, "it was not the least of her distress that it might appear that she was stinting the family or guests."
They had thirteen children:
1. Eliza Woodward Barnwell, b. Aug. 22, 1829; d. Jan. 29, 1887. 2. John Gibbes Barnwell. b. June 16, 1831; d. Sept. 19, 1888. 3. Esther Hutson Barnwell, b. Jan. 8, 1833; d. Sept. 3, 1839. 4. Robert Hayne Barnwell, b. June 21, 1834; d. July 14, 1872. 5. William Hazzard Wigg Barnwell, b. July 7, 1836; d. Sept. 11, 1837. 6. Mary Gibbes Elliott Barnwell, b. Feb. 10, 1838; d. Jan. 3, 1864. 7. Sarah Bull Barnwell, b. Sept. 5, 1840; d. Jan. 11, 1850. 8. Ann Barnwell, b. Nov. 27, 1842; d. July 11, 1845. 9. Nathaniel Berners Barnwell, b. Mar. 5, 1845; d. Jan. 5, 1883. 10. James Stuart Barnwell, b. Mar. 5, 1845; d. July 7, 1864. 11. Stephen Elliott Barnwell, b. Oct. 16, 1846; d. Aug. 15, 1849. 12. Charlotte Bull Barnwell, b. Sept. 28, 1848; d. Jan. 24, 1850. 13. Emily Howe Barnwell. b. Sept. 17, 1850; d. Mar. 24, 1887.
-Biography information submitted from 'Barnwell: Story of an American Family.'
Inscription: In Memory of Eliza Barnwell Beloved wife of Robert Woodward Barnwell Eldest Daughter of Capt. John Gibbes Barnwell Born Nov 8th 1807 died Sept 3rd 1891 ---------------- Sleep aged Saint in Jesus sleep ________________ ________________ Thy rest at last