I have just discovered that Julian the Apostate in 362 penned his "Letter to
the Jews" >from Antioch and addressed it to "brother Julos [i.e. Julius],
the patriarch" --known to us as the Tanna, Rabbi Hillel the Second, who
finalized the formula for the perpetual Jewish calendar.
Does anyone know of the use of Julius as a kinnuy for Hillel elsewhere or at
other times. [Full disclosure: my late father, Julius (b. Bamberg, 1898)
bore the Hebrew name YomTov]
Michael Bernet, New York