Where does “足柄下” come from?

足柄下 (Japanese) comes from Japanese 下, from Middle Chinese 下.

Ancestry of “足柄下”, step by step

足柄下 traces back through two separate lines of ancestry.

via Japanese 下

StepLanguageWordMeaning
1Japanese下the below; the lower portion, end; low in degree...
2Middle Chinese下—

via Japanese 足柄

StepLanguageWordMeaning
1Japanese足柄—
Every word from Middle Chinese 下 →Every word from Japanese 下 →