Hécelin was the son of unknown parents. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Guiburge de Montfort. They were married, but the date and place have not been found. They had no known children.
His second wife was Lohérengie de Palaiseau. They were married, but the date and place have not been found. They had no known children.