Harold Knerr
 Harold Hering Knerr (September 4 1882 – July 8 1949) was an American comic strip creator who signed his work H. H. Knerr. He was best known as the writer-artist of The Katzenjammer Kids for 35 years.Born in Bryn Mawr Pennsylvania Harold Knerr's father was Calvin B. Knerr a German physician who had migrated to the United States. His mother was Melitta Hering daughter of Constantine Hering a pioneer of homeopathy.