Prince William is facing a potential diary clash with Princess Kate’s upcoming engagement, it has been claimed. The Princess of Wales is a beloved fixture at Wimbledon, the yearly tennis tournament in London. As the patron of the All England Lawn Tennis and Croquet Club since 2016, Kate is responsible for awarding the trophies at the Ladies and Gentlemen’s finals. However, her attendance at this year’s championships will depend on doctor’s orders, as the princess is undergoing chemotherapy. In March, Kate announced a form of cancer had been found after having a stomach operation two months bef…