께서는

as for

께서 Honorific subject particle + Topic marker
preposition Rare #15,597
as for An honorific topic marker used when referring to a respected person or people.
KO: 할머니께서는 매일 아침 산책을 하세요.
EN: As for my grandmother, she takes a walk every morning.
Forms of 께서는
께서는께선

하지만 공작님 께서는 모두 안전합니다

But the duke and everyone else are safe.

— 레오파드 (1963)

아버지 께서는 현재 집에 안 계십니다.

My father is not at home right now.