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lord of a castle
敵軍が迫る中、城主は兵士たちに城の防衛を命じた。
As the enemy approached, the castle lord commanded the soldiers to defend the castle.
彼はこの城の最後の城主だ。
He is the last lord of this castle.
その城主は領民から慕われた。
That castle lord was beloved by his people.