His son Jeff posted a note on Facebook last night saying: "Hello to family and friends, I have very sad news to convey. My Dad, Robert B. Sherman, passed away tonight in London. He went peacefully after months of truly valiantly fending off death. He loved life and his dear heart finally slowed to a stop when he could fight no more. He wanted to bring happiness to the world and, unquestionably, he succeeded. His love and his prayers, his philosophy and his poetry will live on forever. Forever his songs and his genius will bring hope, joy and love to this small, small world."