ヒルダ・ボレアス・グレイラット
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
hilda boreas greyrat