Thank you for this information.I checked out right away, but I was unable to find whatsoever clues on these patronymic names, although I am quite sure that I have some distant relations, who established themselves in Haiti, at the beginning of the twentieth century, before or long before that time, and maybe, also, after that period. I managed to trace back a certain Mastroti Louis Lavitola, born on 01/10/1916, in Haiti and dead on 12/17/1999, in the same place, according to a haitian obituary source , and that’s how it all started. Before the Internet event, it was pretty hard to find someone, bearing one of these surnames. Now it has become easier, but it appears that there are very few Mastrota/i/o/s around the world. It is not a widespread patronymic for sure.On the other hand, this peculiarity can be considered an advantage, because it narrows the search field on the migratory routes they followed.Anyway, I go ahead andI will always be glad, to receive any kind of news, even small bits of information, concerning their settlements and activities in that part of the world .