 At Dublin on 7 July 1807, Thomas Meredith married Elizabeth Maria (1791–1855), the eldest daughter of Richard Graves, by his wife, Elizabeth Maria (1767–1827), the eldest daughter of the Rev.James Drought (1738–1820) D.D., S.F.T.C.D., of Ridgemount House, Ballyboy, King's Co. (Co. Offaly) and Ferbans, County Wicklow, a nephew of the 'learned savage', his mother's brother, Theaker Wilder.Mrs Meredith, sister of Robert James Graves, was described as 'a lady of much culture and refinement, and possessed also of great energy and force of character.'