He was the son of George Morrow, a painter and decorator from Clifton Street in west Belfast, and his wife Catherine.

In 1896 Morrow showed a watercolour from Rudyard Kipling's book Strange Ride of Morrowby Jukes, in the Empire exhibition at the Earl's Court.

[7] Both showed with three other brothers in the club's first exhibition alongside John Lavery, Hans Iten and FW Hull, at Fisherwick Place Belfast in November 1903.

[5] Morrow contributed a picture showing a complacent John Bull squatting in the home of peasants, to Bulmer Hobson's separatist magazine The Republic in 1906, which was later distributed as a postcard for the Dungannon Clubs.

[1] In 1908 Morrow and his brothers, Albert, Henry, Jack, Edwin and Norman, held an exhibition at the family business of 15 D'Olier Street in Dublin which consisted of seventy-three works, with several paintings by George, including Whitehead, Co.Antrim and Donaghadee.

By 1917 George Morrow was a household name when he joined his brother Albert, and 150 artists and writers, in petitioning the British Prime Minister Lloyd George to find a way of enacting the unsigned codicil to Hugh Lane's will and establish a gallery to house Lane's art collection in Dublin.

Morrow donated a picture of a mounted knight confronting a cheerful dragon upon an invitation from the Ulster Society for the Prevention of Cruelty to Animals for inclusion in their centenary publication.

"[20]Morrow lived most of his adult life in London, although he spent many summers painting watercolours in Ireland, mainly in County Donegal.

[1] Morrow had no children and died at his home in Thaxted, Essex on 18 January 1955 aged 85, one month after his last cartoon appeared in Punch.