President Barack Obama's grandfather's conscription in the army during World War Two was to change the identity of his entire lineage. A posting to Zanzibar saw him convert to Islam and take the name Hussein, which was passed on to his grandson, as is the Luo custom. Several years down the line, although his grandson, the US president, is not a Muslim, his name has attracted controversy with his detractors demanding that he should denounce the faith to which he does not in any case subscribe. Other, less prominent members of the Obama lineage, go about their business unperturbed in...