Bertrade is a French feminine given name related to Bertha, descended from Proto-Germanic roots reconstructed as *berht ("bright") and *rād ("counsel, advice").

[5] In 1089, the much-married Count Fulk IV of Anjou demanded her hand from Duke Robert Curthose of Normandy in exchange for his assistance putting down rebel Manceaux.

[5] Despite his reservations about the duke and about Fulk's numerous ex-wives, William consented to the marriage in exchange for the restoration of lands previously held by his relative Ralph the Asshead.

[5] According to the scandalized English historian Orderic Vitalis, Fulk's embarrassment concerning his bunions prompted him to develop the pigache,[5][6] a pointed-toe shoe that quickly became fashionable across Western Europe despite repeated condemnations by the church.

Finally excommunicated by Pope Urban II in 1095, Philip was forbidden from joining the First Crusade, which established the Kingdom of Jerusalem that her first son Fulk eventually ruled.