By Felix Keith Cristiano Ronaldo has millions of passionate fans all over the world – but none of them come close to matching his sisters for ferocity. Ronaldo’s career at the very top of the game has been built upon a unique talent, a serious work ethic and a legendary self belief. Every step of the way, from the early days at Manchester United to the present day at Al-Nassr, he has been cheered on by his family. As well as an older brother called Hugo, Ronaldo has two older sisters – Elma and Katia. Both are fiercely loyal and completely unafraid to make their feelings known on his career – …