Anno1757, Mariam (Polly) Howard (1740–1770) in matrimonium duxit. Eis erantquattuor filii et una filia, quorum duo (filius et filia) infantes perierunt:
Gulielmus Alvey Darwin (1767), qui undevicensimos dies vixit
Obiit prima Domina Darwin anno1770. Maria Parker,gubernatrix, mox ad curandum Robertum conducta est, et ut videtur ante1771 exeunte, Erasmus Darwin et ea intimi facti sunt. Duas filias illegitimas genuerunt:
Susanna Parker (1772–1856)
Maria Parker Jr. (1774–1859)
Haesororesscholam habitantem puellarum deinde condiderunt. Anno1782, Maria Sr. (gubernatrix) Iosephum Day (1745–1811), negotiatoriBirminghamensi, nupsit, et ei ex illo loco emigraverunt.
Anno1775, Darwin in Elizabetham Pole incidit, filiamCaroli Colyear, secundi Comitis Portmore etuxorem Colonel?Eduardi Pole (1718–1780). Eduardo Pole mortuo, Darwin matrimonio se cum Elizabetha iunxit et adAedes Radbourne eius domum migravit, 6 km (4 milia passuum) ad occidentemDerbiae. Aedes et vicus nuncRadbourne appellantur. Anno1782, ad Viam Full Derbiae migraverunt. Eis erant quattuor filii, quorum unus infans obiit, et tres filiae:
Darwin subito mortuus est die18 Aprilis1802. Corpus in Templo Omnium Sanctorum in Breadsall sepultum est. Erasmus Darwin hodie commemoratus est in uno exLapidibus Lunaribus, copia monumentorumBirminghamiae nunc positorum.
Erasmus Darwin,A Botanical Society at Lichfield. A System of Vegetables, according to their classes, orders . . . translated from the 13th edition of Linnaeus’ Systema Vegetabiliium. 2 vols., 1783, Lichfield, J. Jackson, for Leigh and Sotheby, London.
Erasmus Darwin,A Botanical Society at Lichfield. The Families of Plants with their natural characters...Translated from the last edition of Linnaeus’ Genera Plantarum. 1787, Lichfield, J. Jackson, for J. Johnson, London.
Erasmus Darwin,The Botanic Garden, Part I, The Economy of Vegetation. 1791 London, J. Johnson.
Part II,The Loves of the Plants. 1789, London, J. Johnson.
Darwin, Erasmus 1797.A plan for the conduct of female education in boarding schools. J. Johnson, Derby. 4to, 128 pages; last two leaves contain a book list, an apology for the work, and an advert for "Miss Parkers School".
Erasmus Darwin,Phytologia; or, The Philosophy of Agriculture and Gardening. 1800, London, J. Johnson.
Erasmus Darwin,The Temple of Nature; or, The Origin of Society. 1803, London, J. Johnson.