Having worked with Hugh Murphy in mid 60's for Shel Talmy Productions. I broached this question with Shel and he stated that Hugh died of a throat problem possibily cancer.
Hugh Burnett - producer - died in 2011.
Jack Ruby - record producer - died in 1989.
Robert E. Myers - record producer - died in 1976.
Ken Nelson - United States record producer - died on 2008-01-06.
Hugh of Die died in 1106.
Hugh Borton died in 1995.
Hugh Hanna died in 1892.
Hugh Potter died in 1662.
Hugh the Chaplain died in 1188.
Hugh Aston died in 1558.
Hugh Lister died in 1944.
Hugh Wyndham died in 1684.