He eloped with and subsequently married Marcia Maria Grant, the daughter of Gen. Sir John Colquhoun Grant[6] on 18May 1835.[7] Together, they were the parents of three daughters and six sons:[8]
Edith Marcia Caroline Sheridan (1836–1876), who married Francis John Thynne, son of Lord John Thynne.[9]
Richard Brinsley Sheridan (1838–1868), who died unmarried.[2]
Francis John Rogers Sheridan (1842–1877), who died unmarried.[2]
Helena Charlotte Sheridan (1845–1893), who died unmarried.[2]
Algernon Thomas Brinsley Sheridan (1845–1931), who married Mary Lothrop Motley, daughter of John Lothrop Motley.[2]
Charles William Frederick Sheridan (1847–1896), who died unmarried.[2]
Thomas Constantine Henry Kier Sheridan (1851–1931), who died unmarried.[2]
James Colquhoun Grant Sheridan (1857–1865), who died young.[2]