Throne
Middle English: from Old French trone, via Latin from Greek thronos ‘elevated seat’.
wiktionary
From Middle English trone, from Old French trone, from Latin thronus, from Ancient Greek θρόνος(thrónos, “chair, throne”).
etymonline
throne (n.)
c. 1200, trone, "the seat of God or a saint in heaven;" c. 1300 as "seat occupied by a sovereign," from Old French trone (12c., Modern French trône), from Latin thronus, from Greek thronos "elevated seat, chair, throne," from suffixed form of PIE root *dher- "to hold firmly, support" (source also of Latin firmus "firm, steadfast, strong, stable," Sanskrit dharma "statute, law"). From late 14c. as a symbol of royal power. Colloquial meaning "toilet" is recorded from 1922. The classical -h- begins to appear in English from late 14c.
