Daigle, 39, was found dead alongside his girlfriend, 44-year-old Nancy Samson outside his home in Ste-Croix-de-Lotbinière. They had both been shot.
Seventy kilometres away in St-Isidore, sisters Béatrice Godin, 11, and Médora, 13, were also shot. Médora died on the scene and Béatrice died three days later in hospital.
They were found along with their father, 54-year-old Martin Godin, in his home. He is still in hospital in critical condition and is considered the primary suspect in the case by police.
The funerals of Nancy Samson and Béatrice and Médora Godin will be held Wednesday afternoon at a funeral home in St-Romuald, in Lévis.