Hewernef
Herwernef could have been the name of a Vizier of Ancient Egypt, assumed to have served during the reign of Ramesses III. He was possibly appointed to the post in the tenth regnal year of Ramesses III and held the office until the 29th regnal year. However, this interpretation of a short hieratic text on an ostrakon is only a hypothesis.
In a partly different treatment of the Florence ostrakon, a vizier is recognized herein, though not given the personal name suggested by Wolterman.