 Heathcote married firstly Lady Katherine Sophia Manners, eldest daughter of John Manners and Louisa, Countess of Dysart, in 1793.After his first wife's death in 1825 he remarried the same year.Heathcote died in March 1851, aged 77, and was succeeded in the baronetcy by his son, Gilbert, who in 1856 was elevated to the peerage as Baron Aveland.