Hello!
I found the birth record for you which I'm attaching. It's not the clearest copy and the handwriting isn't all that easy to read. It basically says that Marguerite Luparini was born on 31 March 1883 at 2.40 in the morning to Archange Luporini, age 38, a sawyer, from Liguria, Italy and to Leonide Belluomini, age 30. I'm not sure of the witnesses given names but the first one's surname is Bertolozzi, age 25, and the other looks like Rovai, age 23.
I checked the records to see if there were any other Luporini births before or after Marguerite's in Marseille but didn't find any.
Let me know if I can help any further.
Cheers,
Soosi
Almost forgot: there was a large influx of Italians to Marseille in the late 1800s due to economic and political reasons. Today about one-third of the people living in Marseille are of Italian origin.