Son of Edgar James Duncan and Clara Annie Duncan, nee Nicholls, of West Cross, Swansea.

Donald's father, Edgar died when living at 40 Oakland Road, Mumbles, in 1926. Clara was still at that address with her parents, Arthur and Emily Nicholls in 1931. By 1939 she living with Donald, at 39 Moorside Road, West Cross, Swansea.

Clara Duncan remarried in 1961 (she was a good age by then) - to Temple C. Williams.

In 1939 Donald worked an clerk to an auctioneer.

Duncan was based at Tuscaloosa Air base in Alabama for training.

Report:

On the night of 1-2 February 1944, the target of 205 Group RAF was the aircraft factory at Maribor in Yugoslavia. The ongoing repairs to the runway at Tortorella prevented No.231 Wing from operating, and the thirty aircraft dispatched were provided by Nos 236 and 330 Wings. The weather and visibility were good, and early reports suggested that a concentrated attack had been carried out. However, the bombing photographs showed that the target attacked was not the Maribor factory but another some miles to the south-east. Considerable flak was encountered in the target area, and there appeared to be good co-operation between searchlights and night-fighters. One aircraft, the Wellington X LN345 ’M’ of 104 Squadron did not return, and was presumed to have been an aircraft seen to have been shot down over the target.

This Wellington departed Foggia at 1751 hrs. At 2040 hrs they were attacked SE of Maribor by a night fighter piloted by Oblt Hans Krause, Staffelkapitan of 6./NJG 101 and flying a Do217 N from Parndorf airfield. Other crews reported seeing an aircraft burning in the air, still firing tracer. It went down in flames and exploded on impact 2 km southeast of Maribor. Krause claimed this bomber shot down as his 4th victory.