Daughter Elizabeth (1819–1866) known as Bessie, married Lewis Llewelyn Dillwyn, a scientist, industrialist and long-serving Liberal MP for Swansea who campaigned for disestablishment in Wales on 16 August 1838. Elizabeth Llewellyn contributed to the designs of the Cambrian Pottery owned by her husband, particularly their Etruscan ware. They had four children, Henry (b. 1843) who became a barrister and three daughters: Mary De la Beche Nicholl (1839–1922), a lepidopterist; Amy Dillwyn (1845–1935), a novelist and industrialist; and Sarah, known as Essie (b. 1852), who became an actress after a divorce.