KimRon has not ventured further into the Nazi historical archives in Berlin to find out more about what happened to Bodner in the camp, and he insists he does not want to know -- but he does want to trace his brother.

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It is also one of loss: Mr Mbeki's only son, fathered when he was still a teenager, disappeared without trace in the early 1980s, as did his younger brother.

ECONOMIST: Thabo Mbeki

Amateur family researcher Chris East managed to trace a relative - Paul Wolstencroft, whose father, Thomas, was Pte Wolstencroft's brother - and reunite him with the postcard.

BBC: Nurses and patients from Shepreth hospital

Amateur family researcher Chris East worked to trace 61-year-old Paul Wolstencroft whose father, Thomas, was Pte Wolstencroft's brother.

BBC: Nephew traced in WWI postcard mystery

Family sources trace the bitterness between the two brothers to their childhood when Kpatcha, who was bigger than his older brother, was alleged to have made attempts to intimidate and bully Faure.

BBC: Faure Gnassingbe taking the oath of office in 2010