46-year-old Perez Cleveland will be locked away for a long time.
He was found guilty of first-degree murder in the 2016 death of 42-year-old Jennifer Barrett.
Cleveland shared a home with Barrett and five other women, one of which was his adult daughter.
Court heard how Cleveland abused and manipulated Barrett and four of the women who were referred to as "sister wives”, before he killed Jennifer and put her in a barrel.
The barrel was found in the backyard of a home in Winnipeg`s Waverley Heights neighbourhood on December 1, 2016. Police say the barrel was filled with chemicals meant to speed up decomposition.
Four of the women that testified during the trial said Perez was initially charming, but he turned psychologically, physically abusive.