heres a history of OC for your area of canada,
this is a very reliable source and a good read

global mafia is a link,it does not have a sight
per-say,sometimes very hard to get to!

In Montreal, La Cosa Nostra criminals fall under the umbrella of New York's Bonanno Family. However, there has always been a rift of varying degrees between criminals of Italian ancestry whose roots are in Calabria and Sicily. For many years, Calabrians were dominant due to the prestige and power of Vic Cotroni, a capo in the Bonanno Family -- often called "The Godfather of Montreal." In the 1970's, as Cotroni grew older and his health began to fail him, he tried to anoint a fellow Calabrian, Paulo Violi, to succeed him as the top banana in Montreal. For various reasons, however, things worked out poorly for Cotroni, and worse for Violi.

Violi got tangled up in an official inquiry into organized crime in Quebec. In addition, the Sicilian Mafia, then getting into the heroin trade in a big way, was looking for Sicilians in Montreal to deal with. Also working against Violi was the ascension of Carmine Galante, a Sicilian and long time heroin dealer, as boss of the Bonanno family. All these factors worked together to diminish the power of the Calabrians in Montreal and increase that of the Sicilians. It wasn't long before Violi, several brothers and other supporters were killed and the Sicilians were in the leadership position. The Calabrian cause was not helped by the nearly continuous legal troubles of Vic's younger brother Frank. Galante's killing at an outdoor restaurant in Brooklyn in 1979 (right) did not help the clout of Sicilians in Montreal. And over the last two decades, the leading Sicilians in Montreal have also come under intense pressure from law enforcement. Many have fled, some have been jailed, and a few have been killed.

Needless to say there are many criminals of other nationalities as well.
Montreal has always had its French hoods. These have usually been gangs which would expand and then contract due to legal pressures and internal problems. The Dubois brothers were the most infamous in the 1970's.

The English gangsters are known as the West End Gang. They too have gone
through many members and leaders. They are more loosely structured than Cosa Nostra mobsters, but the West Enders are sophisticated and have been very active in the drug trade. One leader was very successful in corrupting a Royal Canadian Mounted Police (RCMP) official.

Quebec is also plagued with outlaw bikers. For decades, the various gangs have been fighting and killing each other -- usually in disputes over drug turf. In the 1970's, dead bodies were strewn all over the city due to internal feuds within the Devil's Disciples. By the end of the decade, the Hell's Angels had taken over the violent Popeyes. Then the Outlaws absorbed Quebec's Satan's Choice chapter and the war was on. During the 1990's, the Rock Machine has engaged the Angels in a bombing and shooting war. Bikers often try to intimidate parole and prison officials to obtain favorable treatment in prison and to ensure control of drug dealings in the prisons. Two prison guards were gunned down and an Angel has been accused of masterminding the hits.

In Ontario, the Calabrians have controlled the western end of the province for decades. There are a number of cells of the Calabrian "ndrangheta in the region and they have always showed a great deal of respect to the Cosa Nostra Family of Buffalo, which has always had a number of made members operating in Ontario. Among the more well known mobsters, were Paul Volpe and Johnny Papalia (left). Both were killed in gangland hits, when they fell out of favor in power shifts in the U.S. and Canada.

When Cotroni was on top in Montreal, the Toronto hoods were very respectful toward him and wiretaps indicated that he was in a superior
position even though the Ontario mobsters belonged to another Family.

There was an ebb and flow in the power of the various Calabrian cells in
Ontario. During the 1920's and 30's, a Calabrian named Rocco Pieri dominated South Western Ontario. Prohibition made him rich but by the 1940's, his power had waned and he was made to disappear. It is likely that hoods associated with the Buffalo Cosa Nostra Family took him out.

In the 1950's and 1960's, mobsters with Buffalo connections, like Papalia, were on top. However, Papalia had a number of brushes with the law that prevented him from becoming dominant. Fellow Buffalo mobster Volpe began to rise but Volpe was not an intimidator. During this period, various Calabrian cells began to gain strength as the Buffalo boss aged and his Ontario soldiers were preoccupied. Eventually, after the death of the Buffalo Boss in 1974, a split in that Family curtailed its dominance in Ontario.

Also, in 1980, the death of the senior Calabrian 'ndrangheta leader Mike Racco caused a power shift to the 'ndrangheta cell led by the
Commisso brothers, who had strong ties to Italy. Their position was further solidified when Racco's son was killed, thus preventing him from later becoming a rival.

The Sicilian Mafia also has some dealings in Toronto, but rarely do they cross paths or feud with more established Calabrian hoodlums. The Sicilians limit themselves primarily to drug dealings, and leave the gambling, loansharking and other extortion rackets to the 'ndrangheta hoods. This prevents conflict, but both groups are very wary of each other.

To sum up, Toronto has never had one big powerful Italian organized crime gang, like Montreal once did. There were many ethnic groups in Toronto. Jewish hoods were very strong in gambling. The Jamaican, Asian and other ethnic gangs usually steer clear of Italian "territory" and vice versa. Now it's like everywhere else. Everyone is everywhere. No one is dominant.