A 101-year-old man, who last week became the oldest Briton to be convicted of a criminal offence, was jailed for 13 years on Monday for a string of historical sex crimes against two young sisters and their brother. Retired truck driver Ralph Clarke was found guilty of raping and abusing the sisters in the 1970s and early 80s, having earlier admitted indecently assaulting their brother and attempting to rape him when he was a schoolboy.