The second daughter of Odo, Count of Nevers, and Maud of Dampierre, Margaret was Countess of Tonnerre by inheritance from 1262 until her death.
Vajza e dytë e Odo, Count of Nevers dhe Maud of Dampierre, Margaret ishte konteshë e Tonnerrës e trashëguar nga 1262 deri në vdekjen e saj.