He was the son of Lieutenant-Colonel Edward Marten Dunne (1864–1944), Liberal Member of Parliament (MP) for Walsall (1906–1910), of Gatley Park, Leominster, Herefordshire, by his wife Hon.
He was the offspring of Lieutenant-Colonel Edward Marten Dunne (1864–1944), Liberal Member of Parliament (MP) for Walsall (1906–1910), of Gatley Park, Leominster, Herefordshire, by his spouse Hon.