By Thomas Clavin The legion of legendary editors who earned fierce loyalty from some of the top authors in the United States was diminished last week by the death of Alice Mayhew. She died on February 4 at 87 at her apartment in Manhattan. This past Sunday, a funeral was held in Sag Harbor, where she had lived part-time for decades, first on Madison Street and then on John Street. She left no immediate survivors; her brother, Leonard, also a Sag Harbor resident, died in 2012.