Lady Cockburn and Her Three Eldest Sons (1775) is an oil on canvas portrait by Joshua Reynolds.

Work began on the picture in 1773, and, in Grand Manner fashion, Reynolds exploited two classical paintings: the attitude of the child on the left was modelled on Cupid in Velázquez's Toilet of Venus whilst the general composition was inspired by Anthony van Dyck's Charity.

[2] The painting is one of the few signed by Reynolds: Lady Cockburn's dress bears his signature and the year 1775.

1776), became British envoy extraordinary and minister plenipotentiary to Württemberg and the Columbia District whilst her fifth son, Francis, (b.

1776) became a general after being involved in the early history of Canada as a colony and serving in diplomatic positions in the Bahamas and British Honduras.