Where does “二宮” come from?

二宮 (Japanese) comes from Japanese の, from Old Japanese の, from Middle Chinese 能 — talent, ability.

二宮 (Japanese): the 中宮 and 東宮

Definitions

  1. the 中宮 and 東宮

Ancestry of “二宮”, step by step

二宮 traces back through 3 separate lines of ancestry.

via Japanese の

StepLanguageWordMeaning
1Japaneseのgenitive case marker; nominative case marker in a...
2Old Japaneseのplain, field
3Middle Chinese能talent, ability

via Japanese 二

StepLanguageWordMeaning
1Japanese二two, 2; second; two
2Middle Chinese二two

via Japanese 宮

StepLanguageWordMeaning
1Japanese宮the place where a god resides: a shrine; a temple...
2Middle Chinese宮—
Every word from Middle Chinese 能 →Every word from Old Japanese の →Every word from Japanese の →