Complex sentence: Only the case of Tim Kelly gave any real difficulty: he was only nineteen and generally said to look much younger; by referring to him as "a child" his defence counsel created enough unease for two juries to disagree.
Split into simpler sentences: Only the case of Tim Kelly gave any real difficulty. He was only nineteen and generally said to look much younger, and by referring to him as "a child" his defence counsel created enough unease for two juries to disagree.