Stanley Holloway five children, including the actor Julian Holloway. Holloway was born in Manor Park, Essex (now in the London Borough of Newham), the younger child and only son of George Augustus Holloway (1860–1919), a lawyer's clerk, and Florence May "née" Bell (1862–1913), a housekeeper and dressmaker. He was named after Henry Morton Stanley, the journalist and explorer famous for his exploration of Africa and for his search for David Livingstone. There were theatrical connections in the Holloway family going back to Charles Bernard (1830–1894), an actor and theatre manager, who was the brother of Holloway's maternal grandmother. Holloway's paternal grandfather, Augustus
John Kirk (explorer) William Carnegie Kirk was author of "A British Garden Flora". The engineer, Alexander Carnegie Kirk, was John Kirk's elder brother. From 1858 to 1864 Kirk accompanied the explorer Dr David Livingstone on the Second Zambezi Expedition as a botanist and experienced his work to end the East African slave trade. He found Livingstone an inept leader and in 1862 wrote "I can come to no other conclusion than that Dr. Livingstone is out of his mind and a most unsafe leader"". In 1866 Livingstone’s began his next and final expedition, to find the source of the Nile, from Zanzibar. From