He played for Scotland Probables in the 10 January 1920 final trial match of the season. The Probables beat the Possibles side by 19 points to 5 points.[5] He played again for the Probables the following year on 8 January 1921.[6]
His father was James Denoon Duncan (1861–1934) from Greenock, Scotland. He went to South Africa, and was an advocate for its union. He became a Senator of the Union of South Africa in 1932.[citation needed]
The Liverpool Echo announced James Denoon Duncan's death on Thursday 31 May 1934 quoting Reuters:
BOER WAR ADVISER CAPE TOWN. Thursday. The death is announced of Senator Denoon Duncan, who acted as legal adviser to the British military authorities in the Boer War. Born at Greenock. Scotland, in 1961, Mr. Duncan was nominated Senator in 1932. He died on the eve of the twenty-fourth anniversary of the Union, of which was a prominent advocate. — Reuters.
James Denoon Duncan married Sophie Elizabeth Alexander (1868–1954) on 27 November 1889. It was reported in the Greenock Telegraph of 4 January 1890:[8]
James Denoon Duncan, attorney, son of J.D. Duncan, formerly with Greenock Customs, to Sophie, daughter of J.G. Alexander at Kimberley, South Africa on 27th November 1889.
Douglas Denoon Duncan married Ray Evelyn Reynolds.