So, are there any Mafia-esque 'families' in the canon Pathfinder lore? Mafia, La Familia, Yakuza, anything like that?
Lots!
The most direct parallel are the Sczarni - a Varisian 'family' (in the ethnic sense, not just the country sense) with various levels of involvement. There are also particular families within the Sczarni such as the Scarnetti.
Others elsewhere as well, but I'm failing to recall any names.
Council of Thieves? Not sure about them. But worth looking into.
Aspis Consortium? Kind of a Golarion version of East Indian Trading Company.
Red Mantis? Clan of Assassins
Rivermen's Guild of Sargava? Strangle hold on trade on the river there.
Shackles Pirates and the Hurricane King? They sudo work as one unit.
Here is a link to the wiki for organizations, let us know if your find something close.
http://www.pathfinderwiki.com/wiki/Category:Organizations
