Friedrich I of Ferrette (1085-1160) (1085–1160) Parents Ermentrud of Burgundy Theodoric I, Count of Montbéliard Children Louis I of Ferrette Siblings Reginald I, Count of Bar Étienne de Bar Theodoric II, Count of Montbéliard Agnès of Bar Mechthild von Bar Louis de Bar Partners Petrissa of Zähringen Stephania of Vaudemont