Joseph Masson died in 1847 at Terrebonne.

He is considered to be the first French-Canadian millionaire.

After his death, his wife, Marie-Geneviève-Sophie Masson (daughter of Jean-Baptiste Raymond) and her eldest sons continued Masson's companies and the managing of the seigneurie.

She created the seigneurial bureau in 1850, constructed the Masson manor from 1848 to 1854, developed the industry and the mills, and founded the Collège Masson à Terrebonne.

They had twelve children.
Amongst them:
Isidore-Édouard-Candide Masson (1826–1875), businessman and political figure, founder of Sainte-Marguerite-du-Lac-Masson, Quebec.

Louis-Rodrigue Masson, PC (1833–1903), Lieutenant-Governor of Quebec, Minister of Militia and Defence, President of the Privy Council.
Joseph Masson died in 1847 at Terrebonne.
He is considered to be the first French-Canadian millionaire.
After his death, his wife, Marie-Geneviève-Sophie Masson (daughter of Jean-Baptiste Raymond) and her eldest sons continued Masson's companies and the managing of the seigneurie.
She created the seigneurial bureau in 1850, constructed the Masson manor from 1848 to 1854, developed the industry and the mills, and founded the Collège Masson à Terrebonne.
They had twelve children. Amongst them:
Isidore-Édouard-Candide Masson (1826–1875), businessman and political figure, founder of Sainte-Marguerite-du-Lac-Masson, Quebec.
Louis-Rodrigue Masson, PC (1833–1903), Lieutenant-Governor of Quebec, Minister of Militia and Defence, President of the Privy Council.
Joseph Masson