French Relative Pronouns - dont, lequel, où, que, qui - Lawless French Grammar
Relative pronouns are connectors - they link relative clauses to main clauses so that you don't have to repeat subjects and objects. There are five French relative pronouns: dont, lequel, où, que, and qui, which are equivalent to seven English relative pronouns and adverbs: that, when, where, which, who, whom, and whose. - Lawless French