Desdichado
Hero
I assumed it was Italian and pronounced it the way it should be for an Italian name spelled like that.
The c followed by e or i is usually pronounced like English ch in Italian, but ironically the h in Italian turns it hard again.
Before your great-grandfather's time, when some immigration official guessed on the spelling, it was probably spelled Mucciello or Muciello then.

Before your great-grandfather's time, when some immigration official guessed on the spelling, it was probably spelled Mucciello or Muciello then.