Vincent Ragni is an Italian-American and a drug dealing mafia don. He runs the Ragni Crime Family out of his social club.
Vincent was born into the mob life by being the son of a gangster and growing up around people like Sammy and Tony Teresi a capo in the Mosconi Crime Family it is unknown when he was made a made man in the mob.
The Ragni family is a successor to the Mosconi Crime Family but it is unknown when the Ragni Family was formed but it is around 25 years before season 4.
When Teresi was arrested with most of the family, everybody started to talk to the police cut deals except Tony.
After Tony is freed, Vincent celebrates his return but privately talks about how suspicious he is of Tony with one of his men.
James St. Patrick comes to visit, the mobster questions his arrival, while revealing he knows he is Ghost. James shows pictures of Teresi interacting with the feds. He says for this reason and the latter has to get Tommy Egan to do the deed, explaining it will gain Vincent's respect of the old time mafioso up until he finds out that he is a rat.
Vincent subsequently called Tommy and informed of his father's transgression. He explained that this will clear his name in the gang.
Vincent has Tariq kidnapped in the man’s $2 million from James and Tommy or else he will kill Tariq. It turns out this was a scam by both of them for an equal cut but Vincent is secretly planning to have Tariq killed along with his father and uncle. When Tommy and James deliver $1million, Vincent gives a deadline for the oth half the money. To emphasize his threat Vincent then beats Tariq with a bag of oranges. The next day he is forced to release Tariq temporarily put a latter to talk to the police about the death of Joe Proctor. Later on, Tommy and James meet Vincent at the pier and shows them Tariq St. Patrick and they pay him his money while handing over one of his goons. Vincent is pleased with the reward and has Tariq head over before he has his men aim guns at them, revealing his duplicity to Tariq. Vincent taunts them however, James is not fazed and reveals his trump card, it's Benny Civello (Joe Proctor's cousin) who is revealed to know Vincent. Seeing him, Vincent asks Benny why he is there and Benny tells him he owed Tariq because he brought his niece to him after his cousin was killed. Benny threatens war on Vincent if he doesn't back off. Begrudgingly, Vincent falls backs and takes his money while leaving.
Soon Vincent is visited by Ghost who slams him to a wall and disarms him. Nervously, Vincent congratulates him on his lieutenant governor position, hoping they are on good terms. Ghost states he is still upset about what Vincent tried to do but is willing to forgive it, in exchange for a favor. Vincent asks why he should help and Ghost tells him it will do good to have an ally like him once elected. Seeing his point, Vincent agrees.
Vincent was called by Tariq about Tommy's location and he boxed him in with his gang. However, Tommy kills Vincent's men before he proceeds to beat the mobster with his gun several times. Tommy tells Vincent this was for his father, before killing him by pistol-whipping him to death.