hilda_boreas_greyrat
Hilda Boreas Greyrat (ヒルダ・ボレアス・グレイラット Hiruda Boreasu Gureiratto) is the mother of Eris Boreas Greyrat and the wife of Philip Boreas Greyrat. She is a member of the Boreas household.
https://mushokutensei.fandom.com/wiki/Hilda_Boreas_Greyrat