Ben MacIntyre and Paul Orengoh in the Times of London:
Hussein Onyango Obama, Mr Obama’s paternal grandfather, became involved in the Kenyan independence movement while working as a cook for a British army officer after the war. He was arrested in 1949 and jailed for two years in a high-security prison where, according to his family, he was subjected to horrific violence to extract information about the growing insurgency.
“The African warders were instructed by the white soldiers to whip him every morning and evening till he confessed,” said Sarah Onyango, Hussein Onyango’s third wife, the woman Mr Obama refers to as “Granny Sarah”.
Mrs Onyango, 87, described how “white soldiers” visited the prison every two or three days to carry out “disciplinary action” on the inmates suspected of subversive activities.