Vincenzo Alessandri was an Italian

Italian people

The Italian people are an ethnic group that share a common Italian culture, ancestry and speak the Italian language as a mother tongue. Within Italy, Italians are defined by citizenship, regardless of ancestry or country of residence , and are distinguished from people...

 Knight of Malta who became a buccaneer

Buccaneer

The buccaneers were privateers who attacked Spanish shipping in the Caribbean Sea during the late 17th century.The term buccaneer is now used generally as a synonym for pirate...

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Originally a Knight of Malta, Alessandri became a notorious buccaneer. He was captured and pressed into forced labour and died in 1657.

There are several references to a Vincenzo Alessandri who was Venetian

Republic of Venice

The Republic of Venice or Venetian Republic was a state originating from the city of Venice in Northeastern Italy. It existed for over a millennium, from the late 7th century until 1797. It was formally known as the Most Serene Republic of Venice and is often referred to as La Serenissima, in...

 ambassador

Ambassador

An ambassador is the highest ranking diplomat who represents a nation and is usually accredited to a foreign sovereign or government, or to an international organization....

 to Persia during the 16th century but given the provided date of death, it is unlikely the two are the same person.