Samuel Tertius Galton married Frances Anne Violetta Darwin, (1783–1874) daughter of Erasmus Darwin, see above.
They had three sons and four daughters including:
Erasmus Galton (1815–1909), Lord of the Manor of Loxton.

Francis Galton (1822–1911)  -- Inventor, polymath and father of eugenics.
 He married Louisa Jane Butler (1822–1897) during 1853 but their union was childless.
Samuel Tertius Galton married Frances Anne Violetta Darwin, (1783–1874) daughter of Erasmus Darwin, see above. They had three sons and four daughters including:
Erasmus Galton (1815–1909), Lord of the Manor of Loxton.
Francis Galton (1822–1911)  -- Inventor, polymath and father of eugenics.  He married Louisa Jane Butler (1822–1897) during 1853 but their union was childless.
Darwin–Wedgwood family