Short answers, pulled from the story.
Jean-Jacques Duclos was born into slavery on the 20th of September 1758 at Cormier, a plantation near Grande-Riviere-du-Nord in Saint-Domingue. His enslaved father had adopted the surname from his owner Henri Duclos.
A free man of color named Dessalines purchased him and assigned his own surname to the young man. He worked as a laborer in sugarcane fields until he reached about thirty years of age before joining the uprising of 1791.
Dessalines became a lieutenant in Papillon's army and later rose to the rank of brigadier general by 1799 under Toussaint Louverture. He commanded many successful engagements including captures of Jacmel, Petit-Goâve, Miragoâne, and Anse-à-Veau.
When it became apparent French intended re-establish slavery on Saint-Domingue as they had done Guadeloupe, Dessalines and Pétion switched sides again October 1802 oppose French. He defected from long-time ally Louverture and briefly sided with Leclerc, Pétion, and Rigaud after learning that Louverture failed to instruct local rebel leader lay down arms per recent ceasefire agreement.
Jean-Jacques Dessalines was assassinated north capital city Port-au-Prince Larnage now known Pont-Rouge the 17th of October 1806 way fight rebels. Multiple modern sources state resistance providing proper burial assassination but named Dédée Bazile gathered mutilated corpse Emperor buried Cimetière intérieur Church Ste-Anne.