![](https://cdn.animecharacters.io/images/characters/large/105842-ebcc5833.jpg)
Acier Silva (アシエ・シルヴァ)
Acier was a noblewoman of the Clover Kingdom's ruling family, House Silva, and the mother of Nozel, Nebra, Solid, and Noelle. She died giving birth to Noelle. She was also a member of the Magic Knights Silver Eagle squad. (Source: Black Clover Wiki)