Mary Parker, Sr (1753–1782)
Mary Day, Sr (1782–1820)

Companion of Erasmus Darwin (1731–1802) between his two marriages; originally hired in 1770 to look after his youngest son, Robert; had two children by him, Susanna and Mary Parker, born in 1772 and 1774 respectively. Married Joseph Day (1745–1811), a Birmingham merchant, in 1782.

Source

King-Hele 1999.