My father in law was Michele Piacentini b. abt 1923 Egypt. His parents immigrated to Egypt from Malta and had 5 sons. Two immigrated to Australia (Michele and Joseph) along with their mother later in her life. The other three boys went to America. Their father had died in Egypt when Michele was small. He was also the youngest
Michele use to say that his family had originaally lived in Piacenza Italy but his grandfather or g/grandfather had moved them to Malta.
I have not been able to find anything for the Piacentinis in Egypt or Mslta, am not even sure if the 5 boys were all born in Egypt or some in Malta.